Casual GUI - Play Light Games - More than 180 icons: circular buttons,  separate icons, touch icons. All high resolution images. 

online in: https://assetstore.unity.com/packages/2d/gui/2d-casual-gui-play-light-games-233493

8 Games in 1: 7 singleplayer + 1 multiplayer

Arcade game: free in play store

online in google play: https://play.google.com/store/apps/details?id=com.playlightgames.minigamesofficial

pc version: playlightgames.itch.io/army-minigames-2d