Speedrunners of Battle Stadium D.O.N (who aim to unlock all characters fastest) have created “seed saves”—memory card files that have certain flags pre-set via external editors. The speedrunning community maintains a database of “any% unlock” saves, which technically constitute external assistance, thus relegating them to a separate “save-assisted” category.

: Many users on forums and YouTube recommend downloading a completed save file (often in .ps2 or MaxDrive format) to bypass the slot machine and immediately access all 20+ characters.

The gameplay is reminiscent of the Super Smash Bros. series, where up to four players battle on dynamic stages. It features a unique "tug-of-war" fighting system where attacking opponents knocks out glowing orbs for players to collect, with a bar at the top of the screen indicating each character's percentage of orbs. Players who collect a majority of the orbs enter "burst mode," dramatically increasing their speed and attack power. The single-player mode involves fighting through five rounds with missions that reward coins, which can be used in a slot machine to unlock characters, stages, and other bonuses.

(Available in the online supplementary material for this paper.)

: Community-provided save files are popular for this title because they come with all 20 characters

Ensures you have access to all game content even if your original memory card fails.

Note: Always use reputable sites and run virus scans on downloaded files. How to Use the Save Data (Emulator vs. Physical PS2)

Building a "complete" save file manually is a grueling process centered around a post-game slot machine. Battle Stadium Mode : Complete a run to reach the credits and the slot machine. The Slot Machine : You must line up three Shonen Jump (pirate) plates to trigger a "Bonus Game". Bonus Game Unlocks : In the bonus round, you must line up three to unlock a character or stage. Character Roster : A 100% save features 20 total characters

Dedicated PS2 memory card USB adapters allow you to plug a memory card directly into your PC and read its contents with specific software.

Specialized forums that host .max or .psu save files.

PS2 save files found online come in various formats depending on the tool used to extract them.