Heart Keeper
Short description
Heart Keeper is a survival tower defense game with action roguelike elements. Protect the Sacred Heart by building and upgrading an arsenal of turrets and various structures. Combine strategy and quick reflexes to survive massive waves of enemies!
- Developer
- autoselff
- Publisher
- autoselff
- Release
- Thu, May 01, 2025
- Price
- $4.99
- Reviews
- 2
- Positive
- 100%
- Followers
- 23
- Owners (estimated)
- 0 – 20K
- Concurrent players
- n/a
- Genres
- Action, Indie, Strategy
- Features
- Steam Leaderboards
- Tags
Review count and SteamSpy's owner range agree well enough to narrow the estimate down to this band. Multiplied by the $4.99 launch price — there is not enough price history for this game to weight the copies by what they actually sold for. Before Steam's cut, VAT and refunds. How these numbers are calculated.
Waiting for Heart Keeper to get cheaper? Name your price and we will email you when it gets there.
Media
History
2 data points since Jul 31, 2026. Gaps mean nothing changed — the value carries forward.
The revenue curve is an estimate, not a measurement. It is the only calculated series here: each interval takes the review growth of that period, multiplies it by the sales-per-review factor and by the price actually charged at the time, and adds the result to the running total. That is why it climbs more slowly through discount periods than the review curve next to it. The last point is the same figure quoted above — gross, before Steam's cut, VAT and refunds. How these numbers are calculated.
Lowest recorded price: $4.99 on Jul 31, 2026. That is the current price.
Similar games that found an audience
Games sharing at least 3 of this title's leading tags, with enough reviews to have gone somewhere. Ranked by how much they overlap, not by how big they are. − missing and + extra mark the tags each one does not share with Heart Keeper. Studio counts the titles that developer has released — the closest thing to production scale that public data allows. It is not a budget, and nobody publishes those.
| Image | Name | Studio | Shared | Tag difference | Price | Reviews | Positive | Released | Revenue (estimated) |
|---|---|---|---|---|---|---|---|---|---|
|
Necrosmith | Alawar 33 titles | 4 | − Isometric − Perma Death + Zombies + Strategy | $2.99 | 4,873 | 86% | Wed, Jul 13, 2022 | $614k $273k – $2.8m |
|
Repetendium | Bearlex Games 3 titles | 4 | − Tower Defense − Isometric + Early Access + Top-Down Shooter | $5.99 | 220 | 93% | Fri, Nov 04, 2022 | $48k $21k – $243k |
|
Towerful Defense: A Rogue TD | Mini Fun Games 14 titles | 4 | − Isometric − Perma Death + Auto Battler + Shoot 'Em Up | $1.99 80% best price ever |
208 | 71% | Mon, Jul 29, 2024 | $79k $35k – $141k |
|
Chess Survivors | Aarimous 3 titles | 4 | − Tower Defense − Isometric + Chess + Real Time Tactics | $4.99 | 155 | 84% | Thu, Aug 31, 2023 | $28k $13k – $50k |
|
Wildkeepers Rising | Lioncode Games first game | 4 | − Tower Defense − Perma Death + Creature Collector + Hand-drawn | $9.99 | 109 | 80% | Thu, Oct 23, 2025 | $45k $20k – $80k |
There are more like this. Your plan shows the 5 closest neighbours; Plus and Pro show up to 100 — enough to see the shape of a niche instead of a sample of it.