Magikarp Splash was a minigame added to Vortex for the 2018 April Fool's day event. The game involved players controlling a Magikarp to collect berries, while avoiding hazards such as Pidgeotto and Sharpedo attacks. If the player was "eaten" by these Pokémon, the game would be over. Magikarp Splash returned for the 2025 April Fool's day event, with mechanical and graphical improvements as well as reward changes such as 1 Beast Ball and 2 Vortex Vortex Balls, instead of 5 Beast Balls and 5 Vortex Balls, respectively.
Collecting berries allowed you to gain points. Each berry was worth 1 point and depending on the amount of points gained, players could win prizes.
Prizes
Prizes included a variety of Pokémon, items, avatars and also the ability to change your Magikarp appearance during the game. The following prizes were available:
- Magikarp
- Dark Magikarp Appearance
- Shiny Magikarp
- Shiny Magikarp Appearance
- 1x Gyaradosite
- Magikarp Avatar
- Metallic Magikarp Appearance
- 5x Beast Balls
- Mystic Magikarp Appearance
- 5x Vortex Ball
- Shadow Magikarp Appearance
- Arceus (Unknown)
- 20x Mystery Boxes
Gameplay

The gameplay of this minigame was particularly difficult, appropriately reflecting the "April Fool's" aspect of the event. Pidgeotto and Sharpedo attacks were frequent, and practically impossible to avoid resulting in many "game overs" for players. Due to this, most players struggled to accumulate a large number of points which made the top prizes difficult to reach. However, the event was enjoyed by many and proved very popular as seen by the number of players who participated.