Upgrade Systems in Action Games: Why Earning Coins Feels Good
How upgrade systems work in action games and why earning coins to power up weapons is so satisfying, with a six-weapon mixed reality tank game as example.

An upgrade system is a promise: play well now, and you will be stronger later. When it works, it creates one of the most reliable feelings in games, the pull of "just one more battle." This explainer looks at why upgrade systems are so effective and how to spend wisely, using the per-weapon upgrades of Tank Avenger: Mixed Reality as an example.
The basic loop
- You play a battle.
- You earn coins.
- You spend coins to upgrade something.
- The upgrade makes the next battle feel different.
Tank Avenger describes this simply: earn coins in every battle and upgrade each weapon individually.
Why it feels good
Visible progress. A stronger weapon is proof that your time mattered, even after a lost level.
Ownership. Choosing what to upgrade makes the result yours.
Goals within goals. While you chase the next level you also chase the next upgrade, which keeps sessions purposeful.
Failure is softer. If every battle pays something, a loss is not a total waste.
Per-weapon upgrades vs global upgrades
Some games give one general power level. Others upgrade items individually. Individual upgrades have clear advantages:
- They create real choices, since coins are finite.
- They give each weapon an identity. Your Heat Gun can be your signature.
- They encourage experimentation, since trying a weapon is a commitment.
Tank Avenger has six weapons: Normal Gun, Fast Gun, Bomb Thrower, Heat Gun, Big Gun and Triple Gun. Each one is upgradeable, so you can build around bouncing shots, tracking bullets or explosives.
How to spend coins wisely
- Pick a main weapon first. Spreading coins thinly makes all six mediocre.
- Match your play style. If you love geometry, invest in the bouncing guns. If you prefer moving targets, invest in the tracking ones.
- Respond to worlds. Open Desert levels differ from tight Jungle corridors. Upgrade what you actually use there.
- Try before you invest. Test a weapon in an easy level first.
- Revisit. After a few levels, check whether your choice still feels right.
What good upgrade design avoids
- Mandatory grinding. Upgrades should feel optional enough that skill still counts.
- Invisible changes. If you cannot feel the upgrade, it is not rewarding.
- One best build. Variety should stay viable.
Where abilities fit
Upgrades are separate from abilities like Shield, Speed Boost, Extra Life, Combat Drone, Portal and Air Strike, which add situational options. Together they create two layers of depth: long-term build choices and in-the-moment tactics.
In-game coins and real money
Tank Avenger's terms state that in-game currency and upgrades have no real-world value and cannot be exchanged for money, and that the game and any in-game purchases are sold through the Meta Horizon Store. For specifics about pricing and what is on offer, check the official store listing.
Where your progress lives
Progression in Tank Avenger lives on the headset itself: the support page says level progress, coins, weapon upgrades and your custom levels are all stored locally. That has a design consequence worth knowing, because removing the game also removes the investment you made in it.
Mixed reality touch
Because the fight happens in your room, an upgraded weapon feels tangible. Seeing a stronger shot cross your own floor adds a bit of showmanship to the reward loop. Remember to clear your play area, play in short sessions and stop if you feel unwell.
Avoiding upgrade regret
Regret happens when you spend coins and then discover a better choice. To reduce it, try each weapon on a couple of levels before committing and write down which one you reached for most. Spend in small steps instead of all at once, and notice how each upgrade changes your play. If you still feel you picked wrong, remember that progress comes from playing, not just spending, and coins keep arriving with every battle you fight.
FAQ
How do upgrades work in Tank Avenger?
You earn coins in every battle and use them to upgrade each of the six weapons individually.
Where is my progress saved?
Locally on your headset. Levels, coins, weapon upgrades and custom levels are stored there, and uninstalling the game removes them.
Should I upgrade one weapon or spread coins?
Most players benefit from focusing on one or two main weapons first, though it depends on your style.
Can coins be exchanged for money?
No. According to the game's terms, in-game currency and upgrades have no real-world value and cannot be exchanged for money.