Super Mario Land 2: 6 Golden Coins is a platformer developed and originally published by Nintendo in 1992 for Game Boy. After rescuing Princess Daisy from the alien Tatanga in Sarasaland, Mario returns to his castle in Mario Land only to discover that it has been taken over by Wario, his jealous longtime rival, and that the residents of Mario Land have been placed under Wario's evil spell. Mario must gather the six golden coins that collectively serve as the keys to his castle in order to confront Wario and liberate Mario Land.
The game is notable for featuring Wario's first appearance as a new character. Although he merely functions as the final boss in 6 Golden Coins, Wario would later go on to star in his several of his own games, including the Wario Land series of platformers and the WarioWare franchise.
Super Mario Land 2 was re-released on the Nintendo 3DS eShop as a Virtual Console title in late 2011.
Super Mario Land 2 follows the basic template of several prior Mario platforming titles, particularly Super Mario World which had been released only two years prior. Mario makes use of his impressive jumping abilities to traverse several separate stages while collecting power-ups, which can help him to avoid or defeat his enemies. The Spin Jump from Super Mario World also makes its return in this game, allowing Super Mario or Fire Mario to break certain blocks underneath his feet.
Mario typically proceeds from left-to-right in order to reach the Goal at the end of the stage. Every stage contains a small bell somewhere near the middle that serves as a checkpoint, allowing Mario to resume from that point in the stage after losing a life. Players can optionally try to reach a larger bell hanging above the stage Goal; if Mario manages to ring the large bell, he will be taken to a bonus stage in which the player can attempt to earn power-ups or extra lives by playing one of two mini-games.
While Super Mario Land 2 features Coins, a staple of the Mario series, these collectibles are handled in a different manner than in previous games. Instead of granting players a 1-Up after collecting one hundred Coins, the game continues to increase the tally at the bottom of the screen up to a maximum of 999 Coins. Coins can be spent at the Casino hidden in a cave near Mario's castle for more chances to earn power-ups and extra lives. If Mario completely exhausts his stock of extra lives, the player will receive a game over screen; additionally, any of the six golden coins collected up to that point will be returned to their respective Zone's bosses, requiring Mario to defeat these bosses a second time.
A second counter at the bottom of the screen reflects the number of enemies defeated by Mario. Defeating one hundred enemies causes a Starman to appear nearby, which Mario can collect to gain temporary invincibility. Defeating five enemies while invincible grants Mario an extra life, and the player will continue to gain 1-Ups for every enemy defeated afterward until the effect expires.
- Super Mushroom: Small Mario transforms into Super Mario after picking up this item, allowing players to break certain blocks by jumping up from below, as well as by spin-jumping from above.
- Fire Flower: Fire Mario can toss fireballs at enemies from a distance, but certain foes are immune to his projectiles. Fireballs can also break certain special blocks.
- Carrot: This power-up is unique to Super Mario Land 2. It transforms players into Bunny Mario, who can glide through the air by flapping his long ears. Unlike other flight-based power-ups from previous Mario titles, such as the Super Leaf or Feather Cape, Bunny Mario cannot actually fly in the proper sense; he can only slow his descent by gliding while airborne.
- Starman: Grants temporary invincibility for fifteen seconds.
- Soap Bubble: Only available in the Hippo stage, Mario can find large bubbles near two hippo-shaped statues that allow him to fly when he touches them. However, soap bubbles are easily popped by enemies.
- Space Mario: Mario dons a space suit during his visit to the Space Zone. While on the moon, Mario can jump much higher than normal. In outer space, holding the A button causes Mario to ascend at a constant rate.
Players can move between and select any of the game's six primary "Zones" from the overworld map, each of which contains several stages. Zones may be played in any order, but their individual stages must be completed in sequence to reach a Zone's boss stage and collect one of the six golden coins. Some stages contain alternate exits leading to hidden stages; if Mario loses a life in any of these hidden stages, he will be returned to the previous stage.
In addition to the main Zones, Super Mario Land 2 also contains a handful of standalone stages.