Solid Hollow WAN-SHENG CHEN This is a simple game. It's not hard but maybe not so easy. You must relax and concentrate. Tap to swap the top and bott… Free Buy Now Watch Media DetailsThis is a simple game. It's not hard but maybe not so easy. You must relax and concentrate. Tap to swap the top and bottom circle. Solid collide with Solid. Hollow collide with Hollow. Sounds so easy?! Try it! - Support Game Center Leaderboard - Colorbind friendly game Information Seller:WAN-SHENG CHEN Genre:Action, Arcade Release:Mar 14, 2016 Updated:Mar 29, 2016 Version:1.1 Size:17.5 MB TouchArcade Rating:Unrated User Rating:Unrated Your Rating:unrated Compatibility:HD Universal This is a simple game. It's not hard but maybe not so easy. You must relax and concentrate. Tap to swap the top and bottom circle. Solid collide with Solid. Hollow collide with Hollow. Sounds so easy?! Try it! - Colorbind friendly game smitestyle Member Feb 11, 2016 12 0 0 #2 smitestyle, Mar 20, 2016 Here is the gameplay video Challenge Your Reaction!!! Subscribe to the TouchArcade YouTube channel (You must log in or sign up to post here.) Show Ignored Content Share This Page Tweet Your name or email address: Do you already have an account? No, create an account now. Yes, my password is: Forgot your password? Stay logged in