Levels are made up of blocks,
elevators, refractors, prizes, and two starting points. The game involves throwing blocks picked up from the starting point (one for each player in two-player games, only one is used in one-player) at blocks of the same type which are already in the levels. The blocks are thrown at 45
degree angles and can be bounced off
refractors placed in strategic parts of the levels. The blocks already in the level can be pushed around and bonus items can be collected for additional points, extra lives and extra credits. Each credit starts the player with five lives. The player can have a maximum amount of ten lives. If the player runs out of lives and credits, the game is over. If a thrown block hits a wall/floor, flies off the level or hits a block of another type, then the block is destroyed and the player loses a life. If a thrown block goes through a randomly chosen space on the level called the mystery spot, the screen will turn a gold shade and the player's score points earned are multiplied by 10% for the duration. If a thrown block, when it collides with the blocks of the same type, makes a special shape - a 3x2 square, a 3x3 cross shape, a 3x3 hollow square and a 3x3 square - then a monster is freed from the blocks. At the end of a level, bonus points are awarded for freed monsters. The two-player mode is more or less the same as the single-player mode but is basically a competition for the highest score. In every multiple 40th level, the gameplay changes slightly as a boss level, where the player has to launch weapon-like throwing blocks at the Hunnybunz opponent. The damage done by each throwing block is determined by the high score the player achieved. After sufficient damage has been done to the opponent, the episode is won. Getting touched by the opponent costs the player one life. Boppin' is notable for its odd tone; in the original 1.0 version of the game, the Accursed Toys logo was the company's original "Deady Bear" logo, a teddy bear stabbed with a kitchen knife and bleeding, and upon losing a life, Yeet and Boik would commit suicide by shooting themselves in the mouth and
seppuku respectively. These assets were replaced in the 1.1 version, and were only accessible by using the "blood"
command-line parameter. The game's credits screen would also contain lengthy manifestos from both authors about their motivations behind this. ==Release==