
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About

As a member of the SENTRY Defense Program, you have been thawed from stasis to protect your vessel as it flees across space.

As you choose your escape route in the Navigator, encounters with alien vessels are unavoidable. They will board your ship and attempt to fight their way through different subsystems to destroy the Core.
Your SENTRY must thwart the enemy by bringing to bear an arsenal of potent ranged weaponry. Even with the best shooting abilities, holding back the hordes is only possible by deploying traps and turrets - and if all else fails, utilizing environmental destruction to stem their advance; a well-timed shot could vent aliens into space, a closed blast door could buy you time to set up new defenses.

SENTRY features a singleplayer campaign with the option to have an online friend fighting alongside you in co-op.

Should your SENTRY fall in battle, death is not the end. Another member of the crew will be thawed from stasis by the SENTRY Defense Program, ready to continue the fight.
Even if you fail to defend a level, defeat only changes the strategic landscape in the Ship Overview, forcing you to make new decisions on where to make your next defiant stand.
As long as there is a surviving SENTRY and the Core remains operational, your skills in combat mean victory can always be grasped from the jaws of defeat.

SENTRY aims to carve out its own path in the Action-Defense genre by featuring a campaign where your choices and performance matter. Battles are not one-off events, defeat doesn’t mean replaying a checkpoint. Everything feeds into the ongoing battle for your ship’s survival.
A SENTRY is fast, responsive - and therefore powerful. Deployable traps, turrets and environmental destruction opportunities are needed to supplement this power when facing near-overwhelming forces of reactive and aggressive enemies. Successful escapes will need to utilize a mixture of skill and planning, with discovery and upgrading of new equipment providing an edge in combat.
Combining all these elements evokes the feeling of being a beleaguered and outnumbered SENTRY. On the journey you may lose battles, but you can win the war.

Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Engagement
Reviews
Themes across 51 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
想像とはだいぶ違った タワーディフェンスは敵をトラップで一掃する爽快感が売りだと考えていた。だがこのゲームでは配置コストなどの関係でそのようなことはやりずらい(できないわけではない)。ただその時は敵を銃で撃つことになるため、タワーディフェンスとFPSが融合していた面白いと考えるか、トラップを置いても結局撃たないといけないから面白くないと考えるかは人それぞれだと思う。 また理不尽要素が割とある。例ターディフェンスなので敵の経路などを調べたいがマップがない、それなのにマップは入り組んでいる、マップには見えずらい穴があり落下すると大事な残機が一なくなる、弾薬と回復がマップにある装置からしかできない上に場所がわからない(一応それらが少なくなった時だけガイドがでる)、一部が英語表記のままなど 総合的に悪くはないゲームだが不満点は山ほどある。ただ一年ぶりにやってみると理不尽要素の一部が改善されていたり、爽快感があるタレットが追加されていたので将来性も込めておすすめにしておく。しかし定価ではおすすめしない、セールならあり
Media

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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Languages: English*, French, Italian, German, Spanish - Spain, Japanese, Korean, Polish, Portuguese - Brazil, Russian, Simplified Chinese, Turkish +2 more
Hours played at review time, across 51 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
Players by region
Where this game's players are, estimated from review languages.
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| $516.3K | 870 | 59% | $14.99 | |
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