How to Play Globe Siege - Step by Step
The Globe Siege page loads a ~0.65 MB WebGL tower-defense game in an iframe. You defend a rotating 3D planet: place towers on the hex land cells along each landing corridor, then hold off waves of ground and air enemies across a campaign or an endless mode. Press Play to start.
Step 1 - start and orient the planet
Press Play on the game page, then Engage on the title menu inside the iframe. Drag to spin the globe and scroll to zoom in until you can read the terrain. The game is adapted from TaoweNlin's open-source Earth Defense project (MIT license); the license and credits ship next to the game files.
Step 2 - read the corridors and cities
Enemies land in fixed corridors and march overland toward your cities, so the map tells you where the pressure comes from before the first wave. Rotate to trace each corridor from its landing ring to the nearest city, and plan to line towers along that path.
Step 3 - pick a tower and build on a cell
Press a number key from 1 to 9 to select a tower, then click a land cell to build it; right-click cancels. You spend energy, so early placements matter. Terrain is a real choice: mountains take only anti-air and radar towers, while oceans give an energy-platform bonus.
Step 4 - cover ground and air, then upgrade
Enemies arrive on two layers. Ground units (crawlers, heavies, splitters, siege behemoths, screamers) need guns like the Pulse Cannon and Gatling; the air tier (flying swarms, dive craft, gunships) needs the Orbital Laser and Flak Missile. Each tower upgrades for fire rate, damage, range, or income - upgrade key towers rather than spreading thin.
Step 5 - pace the fight with pause and speed
Space pauses so you can build or read the wave HUD; F changes game speed when a wave is slow; M mutes. A boss mothership arrives in later waves and drops landing pods from high orbit, so keep some anti-air ready for it rather than committing everything to the ground lanes.
Step 6 - choose campaign or endless, and keep your saves
The campaign runs across two chapters of hand-built levels, each with its own corridors and a written objective, and new towers become available as you advance. Endless mode lets you set a difficulty and swarm scale, then survive escalating waves. Your progress, saved loadouts, endless best-wave count, and mute setting stay in your browser under ftol:globesiege:* localStorage keys - no account, nothing uploaded.
| Setting | Value | Notes |
|---|---|---|
| Download size | ~0.65 MB | Single Three.js bundle in a same-origin iframe |
| Input | Mouse + keys | Drag rotate; scroll zoom; 1-9 towers; click build; Space/F/M |
| Towers | 11 types | Ground, anti-air, and support, upgradeable |
| Modes | Campaign + endless | Two chapters of levels, plus configurable endless |
| Saves | localStorage | Keys: ftol:globesiege:* |
| Server calls | 0 | Runs entirely client-side; needs WebGL |
See when to play it in the browser, Medieval Wall Defense, and Marble Maze on this site.
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