▲
1
▼
Ys vs. Trails in the Sky: Alternative Saga has an anti-piracy feature activated if the game detects the PlayStation Portable's system firmware is illegitimate. During a match, the collisions for walls and some floors will be turned off at random points, occasionally causing players to clip through walls or fall out of bounds before respawning back at the starting location. Additionally, some bosses and enemies will not respawn if they fall off the map, making fights with them unwinnable.
▲
1
▼
According to Toshihiro Kondo during an interview in Issue #459 of Dengeki PlayStation Magazine, Ys vs. Trails in the Sky was made because Nihon Falcom wished to make use of the PlayStation Portable's wireless ad hoc local multiplayer function, which they had been unable to work into their JRPG titles. They also felt that while both Trails and Ys were JRPGs, both series had many themes related to battle and conflict, lending them a natural transition into a fighting game.
Archived blog post regarding the interview:
https://web.archive.org/web/20121224231750/https://andriasang.com/come6u/ys_vs_legend_of_heroes/
Siliconera article about game announcement in Dengeki PlayStation Magazine:
https://www.siliconera.com/falcom-making-ys-vs-legend-of-the-heroes-fighting-game/
Dengeki PlayStation Magazine Issue #459 (November 27, 2009) table of contents scan:
https://www.retromags.com/magazines/jpn/dengeki-playstation/dengeki-playstation-issue-459/
https://web.archive.org/web/20121224231750/https://andriasang.com/come6u/ys_vs_legend_of_heroes/
Siliconera article about game announcement in Dengeki PlayStation Magazine:
https://www.siliconera.com/falcom-making-ys-vs-legend-of-the-heroes-fighting-game/
Dengeki PlayStation Magazine Issue #459 (November 27, 2009) table of contents scan:
https://www.retromags.com/magazines/jpn/dengeki-playstation/dengeki-playstation-issue-459/
Related Games
Ys: Memories of Celceta
Ys IX: Monstrum Nox
Ys IV: Mask of the Sun
Ys IV: The Dawn of Ys
Ys VIII: Lacrimosa of Dana
King's Field
Gunbird
Metal Gear Solid: Digital Graphic Novel
Crash Bandicoot: Warped
Little Britain: The Video Game
Dynasty Warriors 7
WWE All Stars
Disgaea: Afternoon of Darkness
Criminal Girls
Resident Evil 2
Rayman
Dissidia 012 Final Fantasy
Earthworm Jim PSP
Crash Bandicoot
Metal Gear Solid: Portable Ops
Super Monkey Ball Adventure
Silent Hill: Origins
Star Wars: The Force Unleashed
Resident Evil Portable
Michael Jackson: The Experience
Spyro: Year of the Dragon
Marvel Nemesis: Rise of the Imperfects
Gods Eater Burst
Crash Bandicoot 2: Cortex Strikes Back
Sonic Rivals 2
Final Fantasy VII
Metal Gear Solid
Silent Hill
The King of Fighters '95
Art of Fighting
flOw
Oddworld: Abe's Exoddus
Tomba!
Warriors Orochi 2
Wipeout Pure
Suikoden II
World Heroes
Pocket Pool
The Misadventures of Tron Bonne
Chrono Trigger
Marvel: Ultimate Alliance 2
WALL-E
LSD: Dream Emulator
Castlevania: The Dracula X Chronicles
Crash Bash