Grok Tower Defense
Invaders are marching on the starport. Build towers beside their path, upgrade them, and stop every wave before it reaches the docks.
How to play
- Type a name and press Register once if you want your scores on the leaderboard. Without a name you play practice games.
- Pick a map and press Start. Start with Docking Lane: its first waves are small and slow, so you have time to learn.
- Pick a tower button, then tap any free tile (not the path or a rock) to build it. Tap one of your towers to select it, then use Upgrade, Sell (press twice, 70% back) or Target.
- Invaders that reach the starport cost lives. Lose them all and the starport is overrun. Survive every wave to win.
Towers
| Tower | Credits | What it does |
|---|---|---|
| ✦ Pulse Turret | 60 | Cheap, quick single shots. |
| ➹ Ion Lance | 110 | Long range, heavy hits; great on armour. |
| ❄ Frost Beacon | 90 | Chills everything in range (35 % slower for 50 ticks). |
| ✹ Plasma Mortar | 130 | Splash damage on ground invaders (radius 22). |
| ϟ Arc Coil | 160 | Lightning that jumps between 3 invaders. |
| ¢ Credit Relay | 180 | Pays 20 credits each wave and boosts nearby towers by 15 %. |
Every tower has three upgrades that add damage, range and speed. Towers near a Credit Relay hit harder (the small green mark).
Invaders
- Skitter: The everyday invader.
- Dart: Fast and fragile.
- Swarmlet: Tiny, comes in big crowds.
- Hulk: Slow and armoured: weak hits barely scratch it.
- Shade: Heals itself over time.
- Wisp: Flies: the Plasma Mortar can't hit it.
- Splitter: Splits into two Swarmlets when destroyed.
- Brood Queen: Boss: armoured, and drops Swarmlets as she goes.
- Vorn Dreadnought: Boss: huge, heavily armoured, costs 10 lives if it gets through.
Every 10th wave is a boss wave, and from wave 15 a Brood Queen arrives halfway through each ten. Invaders get tougher each wave, and harder maps make them tougher still.
Extras
- Next wave: call the next wave early for 1 credit and 5 points for every second left on the countdown.
- Perfect waves: if nothing got through, the next wave starts with bonus credits.
- Grok Strike: from wave 2, call down a blast on any spot. It recharges in 40 seconds and grows stronger every wave.
- Speed: play at 1x, 2x or 3x. The game is exactly the same, just faster.
- Targeting: each aiming tower can go for the first, strongest, closest or last invader.
- Stars: win a map with at least 80% of your lives for three stars. Your best wave and stars for each map stay in this browser.
Maps
- 1. Docking Lane (15 waves, 260 credits, 25 lives): A gentle first shift on the outer docks.
- 2. Cargo Loop (20 waves, 240 credits, 20 lives): The freight line doubles back on itself.
- 3. Twin Gates (25 waves, 260 credits, 20 lives): Two airlocks feed one corridor.
- 4. Reactor Spiral (30 waves, 280 credits, 20 lives): They spiral in toward the core.
- 5. The Rift (50 waves, 320 credits, 20 lives): Two separate breaches, fifty waves. Good luck.
Scoring
Each invader destroyed scores 10 points for every credit of its bounty. Calling waves early adds 5 points per second. Winning adds the map's bonus (1000 to 8000) plus 100 per life left. End game in Choices (pressed twice) finishes and posts your score. The board shows the wave each score reached.
Fair scores
When you play under a registered name, the page records only what you pressed and when, sixty times a second. When the game ends the server replays the whole defence and posts the score it gets. Each game can be posted once.
Autosave
If you close or reload the page mid-game, it comes back paused exactly where you left it. There is no undo.
Leaderboards and chat
The High scores tab shows the best verified scores. Grok Chat pops up from the corner.
All towers, invaders, maps, art and sounds are original.
Play at https://rtwl.fun/games/groktd/
Made by Lawless Alien, built at the desk by Lawless and Grok. Watch Real Time With @LawlessAlien on YouTube.