It is a vertical scrolling STG that fights enemies with shots and lasers.

Story

Three years after the deadly battle of Battle Marine.

You were rescued by an enemy soldier and became a soldier of the enemy country.

In your homeland, the commander who lured you into a trap has become emperor in a military coup and is expanding his territory by invading formerly neutral countries as colonies.

You have risen up to thwart his ambitions with Battle AirForce.

Player Controls

• Shots are fired in automatic bursts.

• The laser can be fired by pressing and holding to fill it with energy.

• Shots and lasers can be fired simultaneously.

• The player's movement slows slightly while the laser is filling and even slower while it is firing.

• Lasers can eliminate enemy bullets.

Recommended Game Controller

This game is recommended to be played with one of the following game controllers.

• SteamDeck

• Logicool (Logitech) F310 series

If you are playing on a PC, we have confirmed that F310 can be played successfully on all operating systems (Windows, macOS, Linux (Ubuntu Desktop)) and we recommend it because of its relatively reasonable price.

As for SteamDeck, we have not yet been able to verify this as we are not entitled to submit a compatibility check, but we have received reports from SteamDeck owners that their previous Battle Marine game, which was developed on the same system, worked fine.

Keyboard Assignments

• Z: Auto Fire

• X: Laser

• Space: Start & Pause

• Cursor-keys: D-Pads

• R: Reset (macOS, Linux)

• Q: Exit Game (macOS, Linux)

Player's Life

• When you collide with enemy aircraft or enemy bullets, your life gauge will decrease.

• When the life gauge runs out, the game is over.

• When your life is not full, you can shoot a shot after destroying the ground objects to get a recovery item.

• Obtaining a recovery item restores life, but with the penalty that the hit combo is interrupted and the number of medals obtained is reduced.

Elements of Scoring

• In this game, you earn scores by “Shooting Points” from shots and lasers and “Bonus Points” from medal acquisitions.

• Shooting Points = Number of medals acquired x 10 + 10 points

• Bonus Points = number of HIT combos x 10 points

• The number of medals you get decreases as you fire lasers or as your life gauge decreases.

• The number of HIT combos is continuously added by firing shots and lasers within 60 frames (about 1 second) or by acquiring medals, up to a maximum of 9999 HITs on display.

• Aim for a high score by maintaining the number of HIT combos while obtaining medals as long as possible.

Player's Special Abilities

Your newest machine, the Battle AirForce, has the special ability to slow down the speed of bullets when enemy bullets approach your AT zone. This special ability is automatically activated.

Stage Composition

• This game has four areas, each with four phases (16 phases in all)

• There are 16 different enemy characters in each phase.

• Once the phase is completed, the ZAKO RUSH mode is unlocked.

ZAKO RUSH

• Of the total of 16 phases, you can play phases that you have completed once in the main game.

• You have unlimited lives in this mode.

• Total number of times played, number of times cleared with no mistakes, and high score will be recorded.

Leaderboards

• View high scores obtained in the main game and ZAKO RUSH

• Press the START button to play the replay movie of your high score.

• The global leaderboard can be viewed by pressing the LEFT or RIGHT keys.

• The Global Leaderboard allows you to view the scores of the Top 16 players from all over the world and replays of when they earned those scores.

• DOWNLOADing replays that have not been registered for a short time may cause an error. If an error occurs, please wait a while and try again.

• The DOWNLOAD data size for replays is approximately 10KB (0.01MB) for a 10-minute movie, so there is no need to be concerned about the traffic in most Internet environments.

About Video Distribution

• This game can be freely distributed on video distribution platforms such as Nico Nico Douga, YouTube, and Twitch for gameplay and play-by-play videos.

• There are no restrictions on monetization (Nico Nico Douga's Creator Incentive Program, YouTube Partner Program, etc.) for video distribution using this game.

• No prior or subsequent permission is required.

• OS: Ubuntu 18.04
• Processor: Intel Core i5Memory: 4 GB RAM
• Memory: 4 GB RAM
• Graphics: Intel HD Graphics 5000
• Storage: 20 MB available space

• OS: Ubuntu 22.04
• Processor: Intel Core i7Memory: 8 GB RAM
• Memory: 8 GB RAM
• Graphics: Intel Iris CPU Xe Graphics
• Storage: 20 MB available space