A new 2D shoot-'em-up computer game in which multiple players against each other is invented. All objects are located in a non-Euclidean plane with a negative Gaussian curvature, and mapped onto Poincare disks where each player's character is centered. On each of the disks, shown for its corresponding player, objects near the player's character are drawn larger and distant ones smaller, so that the player get a sense of speed while being represented a broad gaming area.

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