Infinitower floors are split into Rescue Stages, Siege Stages and Time Attack Stages.
1) Rescue Stages
2) Time Attack Stages
In Rescue Stages, you win by freeing the inhabitants of the Yellow Planet, and you can check the rescue count in the upper left corner.
3) Siege Stages
In Siege Stages, you can win by destroying the enemy base and you can check the HP of the enemy base in the upper left corner.
The enemy base is located in the center of 3 lanes, and only Rangers who move along the center lane can attack the base.
Boss Mode
There is one Boss Stage per 10 floors.
To clear Boss Stages, defeat the Boss within the allocated time.
Bosses can move freely between the 3 lanes,
so you must think extra carefully about how you dispatch your Rangers.
Boss stages are more difficult to clear, but you get more exciting rewards in return for your hard work!