Kami wa Game ni Ueteiru.

Theyre literally like the same anime. Both are considered best at games in their world both have god's of games both had the god wanting the player to come to their world or dimension or whatever to compete.  

Both shows involve 1 guy with 2 cute girls working together in order to beat strategic games! Winning games also gives them access to more "abilities" to use while playing games. 

Both anime have a central theme of solving puzzles / games. Each host a male lead with a sharp as a tack mind and teammates / friends to back them up in times of need.