diff --git a/pages/index.vue b/pages/index.vue
index 015e9cd..3e4ee42 100644
--- a/pages/index.vue
+++ b/pages/index.vue
@@ -102,11 +102,15 @@ export default {
   },
   methods: {
     gametick() {
-      for (let i = 0; i <= 4; i++) {
-        const currentCompletion = this.$store.state.processes[i].completion
-        const step = 100.0 / (6.0 * (i + 1)) // go at different rates
-        let newValue = currentCompletion + step
-        if (newValue >= 100) newValue = newValue - 100
+      for (let i = 0; i < this.$store.state.processes.length; i++) {
+        const p = this.$store.state.processes[i]
+        // const step = 100.0 / (6.0 * (i + 1)) // go at different rates
+        const step = p.workerRate * p.workerCount
+        let newValue = p.completion + step
+        while (newValue >= 100) {
+          newValue = newValue - 100
+          this.$store.commit('addCurrency', p.reward)
+        }
         this.$store.commit('setProcessCompletion', {
           processIndex: i,
           value: newValue,
diff --git a/store/index.js b/store/index.js
index 8624bdd..b90d909 100644
--- a/store/index.js
+++ b/store/index.js
@@ -60,24 +60,30 @@ export const state = () => ({
       instrument: 'Star Chart',
       worker: 'Shaman',
       deviceCount: new Decimal(0),
-      workerCount: 0,
+      workerCount: 1,
       completion: 0,
+      workerRate: 8.0, // amount added to "completion" (100=full bar) per worker
+      reward: 10, // currency added when the bar is completed
       unlockThreshold: { tech: null, currency: 0 },
     },
     {
       instrument: 'Stone Calendar',
       worker: 'Stonecarver',
       deviceCount: new Decimal(0),
-      workerCount: 0,
+      workerCount: 1,
       completion: 0,
+      workerRate: 4.0,
+      reward: 35,
       unlockThreshold: { tech: null, currency: 10000 },
     },
     {
       instrument: 'Astrolabes',
       worker: 'Mathematician',
       deviceCount: new Decimal(0),
-      workerCount: 0,
+      workerCount: 1,
       completion: 0,
+      workerRate: 1.5,
+      reward: 80,
       unlockThreshold: { tech: 0, currency: new Decimal(10e5) },
     },
   ],