Xeno Crisis is a 2019 multidirectional shooter homebrew video game developed and published by Bitmap Bureau for the Sega Mega Drive/Genesis, Linux, macOS, Microsoft Windows, Nintendo Switch, PlayStation 4, and Xbox One.

The facility sent a distress signal, leading Commander Darius dispatching space marines John Marsh and Sarah Ridley to confront the aliens.

Praise was given to its graphical presentation, soundtrack, arcade-style gameplay, controls, and cooperative multiplayer, but some reviewers felt mixed regarding the bosses and certain design decisions.

[4][5][6] The characters can withstand a limited number of enemy hits but the game is over once their health are depleted, though players have the option to continue playing using elixirs that can also be purchased.

[17][18][19][20] The game was initially in development for Sega Mega Drive/Genesis, but ports for Dreamcast, Linux, macOS, Microsoft Windows, and Nintendo Switch were confirmed after the funding reached previously established stretch goals.

[7][23] It was first slated for October 2018, coinciding with the 30th anniversary of the Mega Drive's Japanese launch,[17][18][19] but Bitmap Bureau later announced that the game would not be ready by 2018, due to production slowing down.

[31] The Dreamcast port went gold and was published on June 16, 2020, featuring additional content including a narrated introductory sequence and support for the VMU.

[34] The Mega Drive version was included as part of the Xeno Crisis & Tanglewood compilation for Evercade, released by Blaze Entertainment on November 6, 2020.

[53] Nintendo Life's Jason Brown reviewed the Switch port, praising the game's design, fast-paced gameplay, and cooperative mode, but criticized its difficulty for being off-putting for inexperienced players.

[54] Sega-16's Ken Horowitz gave the Sega Mega Drive/Genesis version positive remarks for its engrossing arcade-style gameplay, artwork by Henk Nieborg, and soundtrack by Daniel Bärlin (Savaged Regime), but noted its difficulty and faulted its short length.

[55] Reviewing the Mega Drive version, Wireframe's Ryan Lambie praised the game's polish and gameplay, but criticized some design decisions like the weapon upgrades and the melee attack feature.

[4] Hardcore Gamer's Marcus Estrada analyzed the Mega Drive version as part of the Xeno Crisis & Tanglewood compilation for Evercade, stating that the difficulty and random-generated stages made it a replayable title.