245+ iOS apps & games curated and reviewed
Looking for free space base idle tower defense apps and games? 20 of our 245+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (180) | Yes | Yes | Aug 2026 |
| 2 |  | Free | 5.0★ (2) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 4.8★ (1.8K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.8★ (568) | Yes | Yes | Aug 2026 |
| 5 |  | Free | — | No | Yes | Jun 2026 |
| 6 |  | Free | 1.1★ (9) | Yes | Yes | May 2026 |
| 7 |  | Free | — | Yes | Yes | Jul 2026 |
| 8 |  | Free | — | Yes | Yes | Jun 2026 |
Build a powerful space base and defend against endless enemy waves in this idle tower defense game. Upgrade turrets, unlock technologies, and earn AFK rewards offline. Strategize your defenses for infinite survival.
Defeat waves of aliens to gain resources and power up your neon towers. This offline sci-fi tower defense game features incremental upgrades and automatic combat, even when you're not playing. Master alien invasion strategies to push deeper into the galaxy.
Engage in real-time strategy to defend your base against relentless enemy waves. Build, upgrade, and deploy a variety of units with precise timing to survive epic battles in space. Master strategic decisions to overcome increasingly difficult challenges.
Command a galactic defense to protect your space tower from alien invaders. Strategically upgrade your tower's abilities and weapons to withstand relentless waves of enemies and defeat powerful bosses. Enjoy idle gameplay with ample rewards, even while offline.
Engage in a strategic tower defense game set in space. Combine elements and add runes to protect your tower, and upgrade your defenses to advance through deep space. Compete with other players for territory and aim for a high strategic score.
Defend your central tower from waves of monsters in this retro pixel art idle tower defense game. Upgrade your tower with coins earned from defeating enemies and strategize to survive the onslaught. It offers a blend of rogue-like survival and classic tower defense mechanics.
Build and upgrade your fortress to defend against waves of monsters and boss attacks. Collect idle rewards and improve your defenses for longer runs. Designed for quick, one-handed play sessions.
Defend against waves of angry aliens in this adventure space game. Choose your ship, combine skill cards and bots, and strategically upgrade weapons to survive increasingly dangerous levels. Enjoy fast-paced, automatic gameplay perfect for on-the-go play.
Engage in a roguelike tower defense experience set in space. Collect unique upgrades and power-ups to customize your ships and advance through challenging enemy waves. Enjoy a minimalistic design with intuitive controls for a relaxing yet strategic gameplay session.
Build a powerful fortress and upgrade its defenses to withstand waves of monsters. Reset your stats after each round to earn more gold and enhance your base for further progress. Discover new worlds and utilize powerful cards to become a great general.
Engage in fast-paced tower defense across diverse worlds and challenging levels. Strategically place and upgrade towers, utilize spells, and defeat waves of monsters to protect your base. Compete on global leaderboards and unlock permanent upgrades.
Engage in an idle defense clicker game where you tap to defeat enemies with your tower. Craft diverse turrets, utilize various skills, and upgrade your battle car for enhanced power. Progress through stages, defeat bosses, and stop zombie attacks in this offline pixel art adventure.
A young wizard, banished for a mistake, must defend his home from monsters unleashed by a shattered seal. Utilize a variety of towers, elemental skills, and ancient demons to protect the world from chaos.