Welcome to the mysterious universe of Survive for 21 Days! In this challenging game, you will lead the cute cat miners to collect precious energy minerals, upgrade powerful equipment and tools, and resist the invasion of alien creatures!

How to play:
1. Launch rockets into space, explore unknown planets, and send out your cat miners to mine gold and crystals.
2. Oops, there are a lot of greedy aliens invading! Don't panic, use ores to upgrade a variety of equipment! From electrostatic fields to rays, arm your ship to the teeth.
3. Use the crystals harvested after exploration to recruit more cat miners and upgrade your rockets. With the continuous production of minerals and energy, you will gain more power.

Features:
1. Cartoon and cute space adventure pictures
2. Fun and casual tower defense game process
3. Challenge a longer survival record

Come and join us, start your adventure, create your mining kingdom in the tower defense game, and feel your unlimited imagination!