4Spin

A fresh spin on the classic. Drop tokens onto a 3D cylinder, connect four to win, and challenge friends or AI across three difficulty levels.

Drop tokens into a spinning cylindrical board and connect four to win. FourSpin takes the classic four-in-a-row formula and wraps it around a 3D cylinder, creating a fresh strategic challenge where the board has no edges.

The cylindrical twist changes everything. Rows wrap around seamlessly, so a sequence that starts on one side of the board can complete on the other. Every column connects to every other column. This opens up new lines of attack and makes defense harder to predict.

Rendered in full 3D with SceneKit, the game board feels like a real physical object. Tokens drop with realistic gravity, bounce on landing, and glow with subtle light effects. Swipe to rotate the cylinder and view the board from any angle. The camera responds with depth of field, ambient occlusion, and smooth motion.

Three ways to play:

Human vs Human — Challenge a friend on the same device. Take turns dropping tokens and see who adapts to the wraparound board first.

Human vs AI — Face off against a computer opponent with three difficulty levels. Easy mode plays casually. Medium mode blocks your winning moves and evaluates positions. Hard mode uses deep lookahead search to find the strongest play.

AI vs AI — Sit back and watch two AI opponents battle. Useful for studying strategy or just enjoying the spectacle.

Features:

• 9-column cylindrical board with wraparound connections
• Stunning 3D graphics with physically-based rendering
• Satisfying drop animations with bounce and impact effects
• Camera shake and glow effects on every landing
• Swipe to spin the board with momentum physics
• 3 AI difficulty levels powered by minimax search
• Undo moves at any time
• Sound effects and background music
• Adjustable volume and animation speed
• Works on iPhone and iPad in any orientation

FourSpin is easy to pick up but difficult to master. The cylindrical board rewards players who think in three dimensions and plan moves that wrap around.

Download FourSpin and discover a new dimension of four-in-a-row.