diff --git a/packages/cosmic-swingset/Makefile b/packages/cosmic-swingset/Makefile
index b3721df7937..233dcbb98a9 100644
--- a/packages/cosmic-swingset/Makefile
+++ b/packages/cosmic-swingset/Makefile
@@ -111,7 +111,7 @@ t1-provision-one:
 
 # Actually start the ag-solo.
 t1-start-ag-solo:
-	cd t1/$(BASE_PORT) && ../../bin/ag-solo start --role=two_client
+	cd t1/$(BASE_PORT) && ../../bin/ag-solo start
 
 # scenario3 is a single JS process without any Golang.  However,
 # the client and the chain within the process run two separate
@@ -131,17 +131,8 @@ scenario3-run-client: scenario3-run
 # Set the fake chain here in case the delay has changed.
 scenario3-run:
 	(cd t3 && \
-			../bin/ag-solo set-fake-chain --role=two_chain --delay=$(FAKE_CHAIN_DELAY) mySimGCI)
-	cd t3 && ../bin/ag-solo start --role=two_client
-
-# These rules are the old scenario3.  No fake delay at all.
-# It's generally better to use the new scenario3.
-deprecated-scenario3-setup:
-	rm -rf t3
-	bin/ag-solo init t3 --egresses=none
-
-deprecated-scenario3-run-client:
-	cd t3 && ../bin/ag-solo start --role=three_client
+			../bin/ag-solo set-fake-chain --delay=$(FAKE_CHAIN_DELAY) mySimGCI)
+	cd t3 && ../bin/ag-solo start
 
 docker-pull:
 	for f in '' -pserver -setup -setup-solo -solo; do \
diff --git a/packages/cosmic-swingset/bin/ag-nchainz b/packages/cosmic-swingset/bin/ag-nchainz
index 927558bc3fb..ebf47ac5ea7 100755
--- a/packages/cosmic-swingset/bin/ag-nchainz
+++ b/packages/cosmic-swingset/bin/ag-nchainz
@@ -126,7 +126,7 @@ start-solos)
 
       $SOLO set-gci-ingress --chainID="$chainid" "$gci" "$rpcport"
 
-      DEBUG=agoric $SOLO start --role=two_client
+      DEBUG=agoric $SOLO start
     ) >>nchainz/logs/$log 2>&1 &
   done
   sleep 2
diff --git a/packages/cosmic-swingset/docker/ag-setup-solo b/packages/cosmic-swingset/docker/ag-setup-solo
index dacda98cf45..8fff0d5555f 100755
--- a/packages/cosmic-swingset/docker/ag-setup-solo
+++ b/packages/cosmic-swingset/docker/ag-setup-solo
@@ -3,7 +3,7 @@ SOLO_NAME=${SOLO_NAME-agoric}
 SOLO_HOME=${SOLO_HOME-$SOLO_NAME}
 PORT=${PORT-8000}
 HOST_PORT=${HOST_PORT-$PORT}
-IMAGE=agoric/cosmic-swingset-solo
+IMAGE=agoric/cosmic-swingset-solo:latest
 case "$1" in
 --pull)
   shift
@@ -16,7 +16,7 @@ if test "$1" = shell; then
   ARGS=
   shift
 else
-  set dummy --webport=$PORT --webhost=0.0.0.0 ${1+"$@"}
+  set dummy setup --webport=$PORT --webhost=0.0.0.0 ${1+"$@"}
   shift
 fi
 exec docker run \
@@ -24,4 +24,4 @@ exec docker run \
   --volume=ag-solo-state:/usr/src/app/solo \
   -eAG_SOLO_BASEDIR="$SOLO_HOME" \
   --rm -it $FLAGS \
-  "$IMAGE" setup ${1+"$@"}
+  "$IMAGE" ${1+"$@"}
diff --git a/packages/cosmic-swingset/lib/ag-solo/fake-chain.js b/packages/cosmic-swingset/lib/ag-solo/fake-chain.js
index 8b32caae780..a947fa3d6c7 100644
--- a/packages/cosmic-swingset/lib/ag-solo/fake-chain.js
+++ b/packages/cosmic-swingset/lib/ag-solo/fake-chain.js
@@ -41,7 +41,7 @@ export async function connectToFakeChain(basedir, GCI, role, delay, inbound) {
 
   const vatsdir = path.join(basedir, 'vats');
   const argv = [
-    `--role=${role}`,
+    `--role=sim-chain`,
     `--give-me-all-the-agoric-powers`,
     bootAddress,
   ];
diff --git a/packages/cosmic-swingset/lib/ag-solo/main.js b/packages/cosmic-swingset/lib/ag-solo/main.js
index 57efb0d1fdf..5f9a71af27a 100644
--- a/packages/cosmic-swingset/lib/ag-solo/main.js
+++ b/packages/cosmic-swingset/lib/ag-solo/main.js
@@ -64,7 +64,7 @@ start
         return;
       }
       if (!fs.existsSync(AG_SOLO_BASEDIR)) {
-        await solo(progname, ['init', AG_SOLO_BASEDIR, ...rawArgv.slice(1)]);
+        await solo(progname, ['init', AG_SOLO_BASEDIR, ...argv.slice(1)]);
       }
       process.chdir(AG_SOLO_BASEDIR);
       await solo(progname, ['add-chain', netconfig]);
diff --git a/packages/cosmic-swingset/lib/ag-solo/vats/bootstrap.js b/packages/cosmic-swingset/lib/ag-solo/vats/bootstrap.js
index b2a2447f75d..8ae3eb80071 100644
--- a/packages/cosmic-swingset/lib/ag-solo/vats/bootstrap.js
+++ b/packages/cosmic-swingset/lib/ag-solo/vats/bootstrap.js
@@ -39,7 +39,7 @@ function parseArgs(argv) {
     }
   });
   if (!gotRoles) {
-    ROLE = 'three_client';
+    ROLE = 'client';
   }
 
   return { ROLE, giveMeAllTheAgoricPowers, hardcodedClientAddresses };
@@ -112,7 +112,7 @@ export function buildRootObject(vatPowers, vatParameters) {
         }
 
         const additionalPowers = {};
-        if (powerFlags.includes('agoric.vattp')) {
+        if (powerFlags && powerFlags.includes('agoric.vattp')) {
           // Give the authority to create a new host for vattp to share objects with.
           additionalPowers.vattp = makeVattpFrom(vats);
         }
@@ -311,8 +311,7 @@ export function buildRootObject(vatPowers, vatParameters) {
       // localhost, with HTML frontend. Multi-player mode.
       switch (ROLE) {
         // REAL VALIDATORS run this.
-        case 'chain':
-        case 'one_chain': {
+        case 'chain': {
           // provisioning vat can ask the demo server for bundles, and can
           // register client pubkeys with comms
           await E(vats.provisioning).register(
@@ -325,9 +324,9 @@ export function buildRootObject(vatPowers, vatParameters) {
           await registerNetworkProtocols(vats, bridgeManager);
           break;
         }
+
         // ag-setup-solo runs this.
-        case 'client':
-        case 'one_client': {
+        case 'client': {
           if (!GCI) {
             throw new Error(`client must be given GCI`);
           }
@@ -354,11 +353,9 @@ export function buildRootObject(vatPowers, vatParameters) {
           });
           break;
         }
-        case 'two_chain': {
-          // scenario #2: one-node chain running on localhost, solo node on
-          // localhost, HTML frontend on localhost. Single-player mode.
 
-          // bootAddress holds the pubkey of localclient
+        // fake-chain runs this
+        case 'sim-chain': {
           const chainBundler = await makeChainBundler(
             vats,
             devices.timer,
@@ -407,55 +404,6 @@ export function buildRootObject(vatPowers, vatParameters) {
 
           break;
         }
-        case 'two_client': {
-          if (!GCI) {
-            throw new Error(`client must be given GCI`);
-          }
-          await setupCommandDevice(vats.http, devices.command, {
-            client: true,
-          });
-          const localTimerService = await E(vats.timer).createTimerService(
-            devices.timer,
-          );
-          await registerNetworkProtocols(vats, bridgeManager);
-          await addRemote(GCI);
-          // addEgress(..., PROVISIONER_INDEX) is called in case two_chain
-          const demoProvider = E(vats.comms).addIngress(GCI, PROVISIONER_INDEX);
-          // Get the demo bundle from the chain-side provider
-          const localBundle = await createLocalBundle(vats);
-          await E(vats.http).setPresences(localBundle);
-          const bundle = await E(demoProvider).getDemoBundle('client');
-          await E(vats.http).setPresences(localBundle, bundle, {
-            localTimerService,
-          });
-          break;
-        }
-        case 'three_client': {
-          // scenario #3: no chain. solo node on localhost with HTML
-          // frontend. Limited subset of demo runs inside the solo node.
-
-          // We pretend we're on-chain.
-          const chainBundler = makeChainBundler(
-            vats,
-            devices.timer,
-            vatAdminSvc,
-          );
-          await registerNetworkProtocols(vats, bridgeManager);
-
-          // Shared Setup (virtual chain side) ///////////////////////////
-          await setupCommandDevice(vats.http, devices.command, {
-            client: true,
-          });
-          const localBundle = await createLocalBundle(vats);
-          await E(vats.http).setPresences(localBundle);
-          const bundle = await E(chainBundler).createUserBundle('localuser');
-
-          // Setup of the Local part /////////////////////////////////////
-          await E(vats.http).setPresences(localBundle, bundle, {
-            localTimerService: bundle.chainTimerService,
-          });
-          break;
-        }
         default:
           throw new Error(`ROLE was not recognized: ${ROLE}`);
       }
diff --git a/packages/cosmic-swingset/lib/ag-solo/vats/chain-config.json b/packages/cosmic-swingset/lib/ag-solo/vats/chain-config.json
index 8a0dfb06cfb..a157336412a 100644
--- a/packages/cosmic-swingset/lib/ag-solo/vats/chain-config.json
+++ b/packages/cosmic-swingset/lib/ag-solo/vats/chain-config.json
@@ -12,9 +12,6 @@
     "host": {
       "sourceSpec": "vat-host.js"
     },
-    "http": {
-      "sourceSpec": "vat-http.js"
-    },
     "ibc": {
       "sourceSpec": "vat-ibc.js"
     },
@@ -33,9 +30,6 @@
     "sharing": {
       "sourceSpec": "vat-sharing.js"
     },
-    "uploads": {
-      "sourceSpec": "vat-uploads.js"
-    },
     "zoe": {
       "sourceSpec": "vat-zoe.js",
       "parameters": {
diff --git a/packages/cosmic-swingset/lib/ag-solo/vats/solo-config.json b/packages/cosmic-swingset/lib/ag-solo/vats/solo-config.json
index 8a0dfb06cfb..944e092a4f4 100644
--- a/packages/cosmic-swingset/lib/ag-solo/vats/solo-config.json
+++ b/packages/cosmic-swingset/lib/ag-solo/vats/solo-config.json
@@ -1,47 +1,18 @@
 {
   "bootstrap": "bootstrap",
-  "bundles": {
-    "zcf": {
-      "sourceSpec": "@agoric/zoe/contractFacet"
-    }
-  },
   "vats": {
-    "board": {
-      "sourceSpec": "vat-board.js"
-    },
     "host": {
       "sourceSpec": "vat-host.js"
     },
     "http": {
       "sourceSpec": "vat-http.js"
     },
-    "ibc": {
-      "sourceSpec": "vat-ibc.js"
-    },
-    "mints": {
-      "sourceSpec": "vat-mints.js"
-    },
     "network": {
       "sourceSpec": "vat-network.js"
     },
-    "provisioning": {
-      "sourceSpec": "vat-provisioning.js"
-    },
-    "registrar": {
-      "sourceSpec": "vat-registrar.js"
-    },
-    "sharing": {
-      "sourceSpec": "vat-sharing.js"
-    },
     "uploads": {
       "sourceSpec": "vat-uploads.js"
     },
-    "zoe": {
-      "sourceSpec": "vat-zoe.js",
-      "parameters": {
-        "zcfBundleName": "zcf"
-      }
-    },
     "bootstrap": {
       "sourceSpec": "bootstrap.js"
     }
diff --git a/packages/cosmic-swingset/lib/ag-solo/vats/vat-provisioning.js b/packages/cosmic-swingset/lib/ag-solo/vats/vat-provisioning.js
index 32cb624e8f2..a3f4813f531 100644
--- a/packages/cosmic-swingset/lib/ag-solo/vats/vat-provisioning.js
+++ b/packages/cosmic-swingset/lib/ag-solo/vats/vat-provisioning.js
@@ -15,7 +15,7 @@ export function buildRootObject(_vatPowers) {
     vattp = v;
   }
 
-  async function pleaseProvision(nickname, pubkey, powerFlags = []) {
+  async function pleaseProvision(nickname, pubkey, powerFlags) {
     let chainBundle;
     const fetch = harden({
       getDemoBundle() {
@@ -32,7 +32,7 @@ export function buildRootObject(_vatPowers) {
 
     // Do this here so that any side-effects don't happen unless
     // the egress has been successfully added.
-    chainBundle = E(bundler).createUserBundle(nickname, powerFlags);
+    chainBundle = E(bundler).createUserBundle(nickname, powerFlags || []);
     return { ingressIndex: INDEX };
   }
 
diff --git a/packages/cosmic-swingset/lib/chain-main.js b/packages/cosmic-swingset/lib/chain-main.js
index f47b40c6e90..5d417002a40 100644
--- a/packages/cosmic-swingset/lib/chain-main.js
+++ b/packages/cosmic-swingset/lib/chain-main.js
@@ -7,7 +7,7 @@ const AG_COSMOS_INIT = 'AG_COSMOS_INIT';
 
 export default async function main(progname, args, { path, env, agcc }) {
   const bootAddress = env.BOOT_ADDRESS;
-  const role = env.ROLE || 'chain';
+  const role = 'chain';
 
   const portNums = {};