Every boss switches weapon at half health
Yes. Every boss in Space Heroes fights in two phases, and when its health drops to half it switches to a weapon of its own for the second phase. Bosses close every fifth level, which makes eight boss fights across 40 levels and 8 worlds — eight bosses, eight weapons, none of them shared.
Yes — every boss in Space Heroes switches weapon at half health. Each one waits at the end of a fifth level, fights in two phases, and the moment its health drops to half it brings out a weapon of its own for the rest of the fight. That adds up to eight boss fights across the game's 40 levels and 8 worlds, with eight different weapons held back for their second phases. The answers below stay with what the game's own description says, and they say so plainly where that description stops.
Which levels end with a boss?
A boss closes every fifth level. Counted out over 40 levels, that puts them at the end of levels 5, 10, 15, 20, 25, 30, 35 and 40: eight fights, which matches the eight bosses the game counts. Level 40, the last level in the game, is one of them, so the game's final level ends on a boss. The other 32 levels come in groups of four between the bosses, and they are where the regular combat happens and where you pick up the coins that pay for upgrades. The rhythm never changes, so wherever you are, you can tell how many levels remain before the next boss. That count is worth keeping in mind if you are saving coins for a particular upgrade or ship.
| Levels | 40 |
|---|---|
| Worlds | 8 |
| Boss levels | 5, 10, 15, 20, 25, 30, 35, 40 |
| Phases per boss | Two |
| When the second phase starts | When the boss is down to half health |
| Second-phase weapons | Eight — one per boss, none shared |
What exactly happens at half health?
Each boss fight has two halves, and the line between them is drawn on the boss's health. In the first phase you wear the boss down. When its health reaches half, it switches to its signature weapon and the second phase begins. Two things follow from that trigger. First, the damage you deal decides when the switch arrives: a strong first phase brings the second one sooner, but it does not make it go away, because half health is a point every boss passes on its way to zero. Plan for both phases on every boss. Second, seeing the switch means you are halfway, not nearly done. The boss still has the other half of its health to lose, and it now defends it with a different weapon.
That is also why the first phase is a poor guide to the second. Whatever you learned while the boss used its opening attack belongs to a weapon it is about to put away. Keep part of your attention free for the change rather than settling into the pattern you have just worked out; the boss you are fighting at the end has a different weapon from the one you met at the start.
Which weapons do the bosses switch to?
Each boss keeps its own weapon for the second phase, and the game counts eight bosses and eight weapons, so no two bosses switch to the same thing. The game's description names seven of those weapons:
- Twin orbs
- A coin arc
- A barrage
- Vertical beams
- A ring
- Crossed beams
- A burst
The eighth is not named there. The description also does not tie each weapon to a particular boss or world, so read the list as a set rather than a running order: nothing says the boss on level 5 is the one with twin orbs. And a name is all the description gives. How fast a weapon fires, how wide it spreads or where it aims is something you learn on the screen, not from this page. What the list does settle is that second phases differ from boss to boss. The weapon you have just learned to survive will not come back on the next boss.
What changes in the last two worlds?
The game puts it in a single line: the last two worlds turn the player's own ship against them. That is everything the description says on the subject, and this guide will not add detail the description does not have. Of the eight worlds, those are the seventh and the eighth, at the end of the game. If you get there, you will see what that line means on your own screen.
Do upgrades and ships matter for the bosses?
Coins dropped in combat fund four upgrade tracks and unlock new ships, and that is the whole progression the game describes. It does not say whether a boss drops more coins than the rest of the combat, or which upgrade suits which weapon, so there is no shortcut to quote here. What it does give you is timing. Bosses arrive every fifth level, so you always know how many levels are left to collect coins before the next one. And because coins come from combat, every level you play adds something towards the next upgrade or the next ship.
Quick answers
- Is there a boss on every level? No — on every fifth level, eight in all.
- Does every boss have two phases? Yes. Every boss fight is two-phase, with the weapon switch at half health.
- Do any two bosses share a weapon? No. There are eight bosses and eight weapons, and each boss holds its own.
- Which ship is best against a boss? The description does not rank the ships; it only says new ones are unlocked with coins dropped in combat.
- Can a friend help with a boss? No. Space Heroes has no multiplayer, so every boss is yours to face alone.
- What language is the game in? English only.
- Is it free? Yes, with in-app purchases; a one-time purchase removes the ads.
Where to play
Space Heroes is a vertical arcade shooter built in Unity, listed on the App Store as Space Heroes: Galactic War. It is free on Google Play, where version 1.0.56 is live, and on the App Store, where version 1.0.66 is live; Google Play has carried it since 8 August 2026. Screenshots, including one taken in a boss battle, and both store links are on the game's page: /games/space-heroes/