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Collect materials and items underground, and craft them on the ground!
Build a unique base and slash enemies!

In current version game have following functions.
- You can challenge to survive for how long against the infinitely stronger enemies.
- Game will limited to 28th day in game time (First goal)
- Excavating underground (Excavating utilize excavation robot or by player)
- And underground ruins (You can get useful items from chest)
- Craft facilities (Workbench, chemistry workbench and forge)
- Storage facilities (chest and supply depot, auto supply fuel and ammunition for trap)
- Trap (9 traps now and more in the future)
- Various block (differences between projectiles can passes through or not)
- Enemy (8 type of enemy and more in the future)
- AutoCraft (an item by connecting the connector can be passed to the facility below)
- Construction mode (to stop the fall of the facility, it can help to re-arrange spaces)

■ Attention

There may have bug
May have possibility of damage to the saved data.

Since we have only a few people involved in development, there may be some glitchs, but we sincerely hope you like it.
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