Steam
Sphere TD
Also known as Sphere TD, sphere td, sphere-td
Sphere TD is a deep tower defense strategy game where you build every tower from scratch! NO presets! Route mods through grid layouts to fire projectiles: split, bounce, chain, pierce, multiply. A true one tower with 1,000,000 build combinations.
Last update
3 Aug 2026
Players now
6
Latest update
Update history
Browse past updates and patch notes for this game.
13 updates
July 2026
- 0.16.11New drag and drop feature for tower and mod management. - Added a new Cadet Sponsorship scheme. Sponsor a cadet to gain permanent rewards for both. - Increased achievements global resource increase unlocks, up to 10%, b…
- 0.16.8Fix new player experience - Auto cloud sync will now respect the 4hr cooldown - Fix world map sync issue
- 0.16.6Fixed the stuck "1/1 energy" bug after first-time onboarding for some cloud-signed-in players - Smoother first launch when signing in with Play Games / Game Center - Added friendly Please Review prompts at map 20, 30, 4…
- 0.16.5Potential fix to main tutorial bugging out - Wave, ore and megaboss burst Spheres no longer collide with base unless near the end of the path
- 0.16.4Fixed mod icons sometimes showing incorrectly on the grid after importing a build - Improved mod auto-rotation and path routing accuracy - Fixed a rare save issue during the tutorial level
- 0.16.3Fix megaboss visual bug - Waves will continue to spawn during box invasion (after loop 50) and wall invasion (after loop 60) - Fix trader saving bug - Cloud sync UI fixes
- 0.16.20.16.2 - Optimized leaderboards backend. - Replaced leaderboards Nearby tab with standings visualization.
- 0.16.1**0.16.1** Basic towers hit much harder — full damage/fire rate/etc.; half range; energy scales with upgrades (3% + 1% per upgrade) - Build mode: double-tap to upgrade, hold ~0.75s to delete - Ore mining quantity bonuse…
- MAJOR UPDATE: Basic Tower Builder**0.16.0 - Basic Tower Builder major update** **NEW FEATURE: Basic Tower Builder** - Spend Titanium during a run to place extra towers on the map (separate from your deployment list) - Works on Endless maps and World Ma…
June 2026
- 0.15.12 - Day 2 QoL patch0.15.12 - Day 2 QoL patch - Control each tower auto-recall/deploy and targeting type (auto, spheres only, ores only) in the property panel. - Updated T1 base perks to drop the auto management feature. - Replace T1 Auto…
- 0.15.11 - Day 1 Patch0.15.11 - Day 1 Patch MEGABOSS INVASION (New - Loop 5+) Megaboss invasions can now appear as a special invasion event alongside Wall and Box invasions. The Megaboss Massive enemy, much larger and tougher than a normal b…
Pricing
Where to buy
Current prices across the stores we track, cheapest first.
Steam$13.99$12.59-10%Buy
Gallery
In-game media
Achievements
Community progression
Top picks from 36 Steam achievements, sorted by player unlock rates.
- Orientation CompleteComplete the main tutorial. The Academy is thrilled you stopped aiming at your own infrastructure.74.9%
- Base OnlineUnlock the Base panel. You are now trusted with the shield grid, the reactor feed, and several buttons labeled do not touch.69.3%
- Sphere JanitorDestroy one thousand spheres. For a Temporary Cadet, this counts as a stable start.51.8%
- Junior CadetUnlock research tier one. You are now authorized to view the starter blueprints. The lab team has moved their personal mugs to a higher shelf.44.0%
- Senior CadetUnlock research tier two. Splitter mods are now legal in your hands, which prompted a controversial meeting at HQ.34.6%
- Sphere ScrapperDestroy ten thousand spheres. The local pile of scrap metal now has its own postal code.27.1%