diff --git a/components/NarrativeModal.vue b/components/NarrativeModal.vue
new file mode 100644
index 0000000..a11d88d
--- /dev/null
+++ b/components/NarrativeModal.vue
@@ -0,0 +1,34 @@
+/* eslint-disable vue/no-v-html */
+<template>
+  <div
+    class="backdrop absolute top-0 bottom-0 left-0 right-0 flex items-center justify-center"
+    @click.self="$store.commit('closeModal')"
+  >
+    <div
+      class="modal rounded-lg px-8 pt-8 pb-4 flex flex-col items-center bg-teal-100 text-teal-900"
+    >
+      <!-- eslint-disable-next-line vue/no-v-html -->
+      <div class="" v-html="$store.state.modalText" />
+      <button
+        class="border bg-teal-900 text-teal-100 rounded-lg mt-4 px-8 py-2 font-bold"
+        @click="$store.commit('closeModal')"
+      >
+        OK
+      </button>
+    </div>
+  </div>
+</template>
+
+<script>
+export default {}
+</script>
+
+<style>
+.backdrop {
+  background-color: rgba(0, 0, 0, 0.4);
+  backdrop-filter: blur(2px);
+}
+.modal {
+  width: 22rem;
+}
+</style>
diff --git a/layouts/default.vue b/layouts/default.vue
index 498bae2..8a805f1 100644
--- a/layouts/default.vue
+++ b/layouts/default.vue
@@ -28,6 +28,7 @@
         <nuxt />
       </div>
     </main>
+    <narrative-modal v-if="$store.state.modalIsOpen" />
   </div>
 </template>
 
@@ -43,10 +44,17 @@ export default {
   },
   mounted() {
     window.setInterval(() => {
-      if (this.$store.state.playerAge < this.$store.state.playerAgeMax)
+      if (this.$store.state.modalIsOpen || this.$store.state.gameStopped) return
+
+      if (this.$store.state.playerAge < this.$store.state.playerAgeMax) {
         this.gametick()
+      } else {
+        this.checkLossCondition()
+      }
     }, 100)
     window.setInterval(() => {
+      if (this.$store.state.modalIsOpen || this.$store.state.gameStopped) return
+
       if (this.$store.state.playerAge < this.$store.state.playerAgeMax)
         this.$store.commit('tickGameDate')
     }, 1000)
@@ -56,7 +64,7 @@ export default {
       // Instruments tick
       this.$store.state.processes
         .filter((p) => p.created)
-        .forEach((process, index) => {
+        .forEach((process) => {
           if (process.completion >= process.completionRequired) {
             const reward = process.baseReward * (1 + process.workerLevel)
 
@@ -75,6 +83,32 @@ export default {
         this.$store.commit('tickEnergy')
       }
     },
+    checkLossCondition() {
+      this.$store.commit('stopGame')
+
+      // End state
+      const lostTheGame =
+        this.$store.state.playerAge === this.$store.state.playerAgeMax &&
+        !this.$store.getters.isTabUnlocked('Time Machine')
+
+      if (lostTheGame) {
+        const message =
+          'You wasted your precious time your whole life with nothing to show for it.' +
+          '<br><br>' +
+          'You have lost the game. Reload the page and try again.'
+
+        this.$store.commit('openModal', message)
+      } else {
+        const message =
+          "You are too frail to continue. It's time to gather your knowledge into a book and " +
+          'send it, along with the time machine and your timekeeping instruments, to your younger self. ' +
+          'Hopefully they will know what to do with this valuable wisdom.' +
+          '<br><br>' +
+          'Go to the <b>Missions</b> tab to continue.'
+
+        this.$store.commit('openModal', message)
+      }
+    },
   },
 }
 </script>
diff --git a/pages/Missions.vue b/pages/Missions.vue
index 6e7c639..19ab40a 100644
--- a/pages/Missions.vue
+++ b/pages/Missions.vue
@@ -80,6 +80,15 @@ export default {
         this.$store.commit('setPlayerAge', { year: 30 })
         this.$store.commit('timeTravel', { year: 1400, era: 'Early Modern' })
         this.$store.commit('tickLifetime')
+        this.$store.commit('spendCurrency', this.$store.state.currency)
+        this.$store.commit('startGame')
+
+        const message =
+          'You are young-ish once again and back in the year 1400 with all your wisdom intact.' +
+          '<br><br>' +
+          'Continue to explore the eras and unlock the secrets of time.'
+
+        this.$store.commit('openModal', message)
       }
 
       if (mission.name === 'Live Forever') {
diff --git a/pages/TimeMachine.vue b/pages/TimeMachine.vue
index 0104f0c..e29e738 100644
--- a/pages/TimeMachine.vue
+++ b/pages/TimeMachine.vue
@@ -62,6 +62,7 @@ export default {
     },
     isEnabled(process) {
       const isCurrentEra = process.unlockEra === this.$store.state.gameEra
+
       if (isCurrentEra) {
         return false
       } else if (process.visited) {
@@ -78,9 +79,13 @@ export default {
         const latestEraIndex = processes.map((p) => p.visited).lastIndexOf(true)
         const nextLatestEraIndex = latestEraIndex + 1
 
+        const middleAges = this.$store.state.processes.find(
+          (p) => p.unlockEra === 'Middle Ages'
+        )
+
         return (
           processIndex === nextEarliestEraIndex ||
-          processIndex === nextLatestEraIndex
+          (middleAges.visited && processIndex === nextLatestEraIndex)
         )
       }
     },
@@ -91,13 +96,23 @@ export default {
       }
     },
     travelToEra(process) {
+      const hadBeenVisited = process.visited // save this before we time travel
+
       this.$store.commit('spendEnergy', process.travelCost)
       this.$store.commit('timeTravel', {
         era: process.unlockEra,
         month: process.minDateUnlocked,
       })
-      if (process.unlockEra === 'Middle Ages') {
-        // do era-specific things
+
+      if (process.unlockEra === 'Middle Ages' && !hadBeenVisited) {
+        this.$nextTick(() => {
+          const message =
+            'Congratulations! ' +
+            "You've successfully traveled through time and landed in the year 1100" +
+            '... though it was rather hard on your body.'
+
+          this.$store.commit('openModal', message)
+        })
       }
     },
   },
diff --git a/store/index.js b/store/index.js
index 9c49236..23d5a01 100644
--- a/store/index.js
+++ b/store/index.js
@@ -58,8 +58,15 @@ export const state = () => ({
       unlocked: false,
     },
   ],
+  modalText:
+    '{{ Premise }}' +
+    '<br><br>' +
+    '{{ Click to generate <span class="fas fa-hourglass-half text-sm"></span> <b>Spare Time</b> }}',
+  modalIsOpen: true,
 
-  currency: new Decimal(10000),
+  gameStopped: false,
+
+  currency: new Decimal(0),
   currencyTotal: new Decimal(0),
 
   gameDate: 1400 * 12,
@@ -387,7 +394,7 @@ export const state = () => ({
       },
       completionCriteria: {
         unit: 'spareTime',
-        value: 1000,
+        value: 300,
       },
       unlocked: false,
       viewed: false,
@@ -485,7 +492,7 @@ export const state = () => ({
   ],
 
   // Time Machine
-  energy: 599,
+  energy: 0,
   energyMax: 600, // 60 seconds
   fluxCapacitorLevel: 1,
   nextFluxCapacitorCost: 500,
@@ -519,7 +526,7 @@ export const state = () => ({
   ],
 
   // Time Magic
-  mana: 99,
+  mana: 0,
   manaMax: 100,
   philosophersStoneUnlocked: false,
 
@@ -688,6 +695,27 @@ export const getters = {
 }
 
 export const mutations = {
+  // UI
+  unlockTab: (state, title) => {
+    const index = state.tabs.findIndex((t) => t.title === title)
+    Vue.set(state.tabs[index], 'unlocked', true)
+  },
+  openModal: (state, text) => {
+    state.modalText = text
+    state.modalIsOpen = true
+  },
+  closeModal: (state) => {
+    state.modalIsOpen = false
+    state.modalText = ''
+  },
+  stopGame: (state) => {
+    state.gameStopped = true
+  },
+  startGame: (state) => {
+    state.gameStopped = false
+  },
+
+  // Currency
   addCurrency: (state, value) => {
     state.currency = Decimal.add(state.currency, value)
     state.currencyTotal = Decimal.add(state.currencyTotal, value)
@@ -696,10 +724,21 @@ export const mutations = {
     value = Decimal.mul(value, -1)
     state.currency = Decimal.add(state.currency, value)
   },
-  unlockTab: (state, title) => {
-    const index = state.tabs.findIndex((t) => t.title === title)
-    Vue.set(state.tabs[index], 'unlocked', true)
+
+  // Dates
+  tickGameDate: (state) => {
+    state.gameDate += 1
+    state.playerAge += 1
+    if (!(state.playerAge % 12)) state.wisdomGained++
   },
+  setPlayerAge: (state, { year, month = 0 }) => {
+    state.playerAge = year * 12 + month
+  },
+  tickLifetime: (state) => {
+    state.lifetimes += 1
+  },
+
+  // Instruments
   createInstrument: (state, instrument) => {
     const index = state.processes.findIndex((p) => p.instrument === instrument)
     Vue.set(state.processes[index], 'created', true)
@@ -716,6 +755,23 @@ export const mutations = {
     )
     Vue.set(state.processes[index], 'completion', 0)
   },
+
+  // Apprentices
+  levelUpApprentice: (state, process) => {
+    if (process.nextWorkerCost > state.currency) {
+      return
+    }
+    const index = state.processes.findIndex((p) => p.worker === process.worker)
+    state.currency = Decimal.subtract(state.currency, process.nextWorkerCost)
+    Vue.set(state.processes[index], 'workerLevel', process.workerLevel + 1)
+    Vue.set(
+      state.processes[index],
+      'nextWorkerCost',
+      Math.floor(process.nextWorkerCost * process.nextWorkerFactor)
+    )
+  },
+
+  // Missions
   setMissionAvailable: (state, missionIndex) => {
     Vue.set(state.missions[missionIndex], 'available', true)
   },
@@ -730,24 +786,8 @@ export const mutations = {
     const index = state.missions.findIndex((m) => m.name === missionName)
     Vue.set(state.missions[index], 'unlocked', true)
   },
-  levelUpApprentice: (state, process) => {
-    if (process.nextWorkerCost > state.currency) {
-      return
-    }
-    const index = state.processes.findIndex((p) => p.worker === process.worker)
-    state.currency = Decimal.subtract(state.currency, process.nextWorkerCost)
-    Vue.set(state.processes[index], 'workerLevel', process.workerLevel + 1)
-    Vue.set(
-      state.processes[index],
-      'nextWorkerCost',
-      Math.floor(process.nextWorkerCost * process.nextWorkerFactor)
-    )
-  },
-  tickGameDate: (state) => {
-    state.gameDate += 1
-    state.playerAge += 1
-    if (!(state.playerAge % 12)) state.wisdomGained++
-  },
+
+  // Time Machine
   tickEnergy: (state) => {
     state.energy += 1
   },
@@ -759,7 +799,7 @@ export const mutations = {
   upgradeMaxEnergy: (state) => {
     state.energyMax += 200
     state.fluxCapacitorLevel += 1
-    state.nextFluxCapacitorCost *= 2
+    state.nextFluxCapacitorCost *= 10
   },
   unlockTimeMachineAction: (state, name) => {
     const index = state.timeMachineActions.findIndex((t) => t.name === name)
@@ -801,12 +841,6 @@ export const mutations = {
     const processIndex = state.processes.findIndex((p) => p.unlockEra === era)
     Vue.set(state.processes[processIndex], 'visited', true)
   },
-  setPlayerAge: (state, { year, month = 0 }) => {
-    state.playerAge = year * 12 + month
-  },
-  tickLifetime: (state) => {
-    state.lifetimes += 1
-  },
 
   // Time Magic
   unlockSpell: (state, name) => {