RETROVAULT: Tower Defense

Cave monsters are after the kingdom's old treasure house, the VAULT! Line up your tiny voxel heroes and keep it safe in this 3D tower defense game.

■ Where you build is where they walk
• Units block enemies, so bend the path and send monsters the long way around
• The path can never be fully blocked, so experiment freely
• Dots on the ground show the current route
• Plan routes with 1-gold fences (WALL), then swap in units later
• Drop a unit onto an enemy to push it to the next tile

■ A squad that's fun to watch
• SWORD: swordsmen leave their posts to rush enemies and slash several at once
• ARROW: archers shoot up to 6 tiles away and hop back when enemies close in
• MAGIC: mages step forward to cast slowing spells
• CLERIC: clerics walk to wounded allies and heal them with prayer
• CANNON: gunner-manned cannons blast everything near the impact
Swordsmen, archers, mages, and clerics have HP. If they fall, they get back up after a while.

■ Class change at Lv2: 16 classes
Tap to upgrade your five fighting units up to Lv4 for new looks, flashier attacks, and fancier posts.
At Lv2, choose a class: NINJA dashes around with clones, SNIPER fires 2.8× shots, THUNDER chains lightning from enemy to enemy, ORACLE speeds up allies' attacks, MISSILE downs flyers with homing missiles, and more. Where each class goes shapes your defense!

■ Tricky enemies
• Flyers ignore the path and zigzag. Hit them with archers, mages, clerics, or FLAK and MISSILE cannons
• Some stop to attack your units; others shoot faraway units on the move
• Some split when defeated; others take detours along the way
30 enemy types and 8 bosses. Scouts warn you 2 rounds before each boss arrives.

■ How long can you last?
Start with 10 LIFE. Enemies reaching the VAULT cost LIFE; beating a boss restores 5 (max 20). Let a boss in, and it's game over. Rounds are endless, so push past ROUND 100!

■ Play more, grow stronger
• Clear 67 challenges to earn points for unit PERKS like power, fire rate, and range. Reassign anytime
• Earn your first point at ROUND 3 and start upgrading from your first run
• COLLECTION: enemies and bosses you've defeated, with HP, speed, and when they appear
• CLASSES: meet every class and watch it battle on a mini board

■ Review every run
See damage, DPS, and kills by unit type, plus your MVP. Tap "View on Map" for each unit's stats.

■ Play at your own pace
• Game speed: ×½, ×1, ×2, or ×3
• Days pass from morning to night. After dark, enemies glow and fence torches light up (or keep it daytime)
• Every 5 rounds, a sweet message arrives, like a letter from the king or gifts from the village

■ In a pinch? Fire NOVA!
Defeat enemies to charge ENERGY. When it's full, watch a rewarded ad to unleash NOVA: huge damage to every enemy on the board, bosses included!

* No in-app purchases. The only ads are optional rewarded ads for firing NOVA.
* v1.x records (kills, challenges, PERKS, etc.) carry over automatically on first launch.
* iPhone only, played in portrait.