ole tower
Over Legend Endless Tower (Abbreviated as Ole Tower) is a Japanese webgame developed by SE Mobile and Online Co.Ltd.
The main purpose of the game is to build an "endless" tower using different "tool girls" (Kenhime) at your disposal. The game also includes a combat system in a phase-by-phase and turn-based fashion, similar to many other games on DMM including Kantai Collection.
The game has gained popularity with a moderate amount of Kantai Collection fans due to the obvious similarity.