1+1=？
Short description
Let's do some easy math with the girls!
- Developer
- Easy S Studio
- Publisher
- Easy S Studio
- Release
- Tue, Mar 04, 2025
- Price
- $0.99
- Reviews
- 56
- Positive
- 91%
- Followers
- n/a
- Owners (estimated)
- 0 – 20K
- Concurrent players
- n/a
- Genres
- Casual, Indie, Racing
- Tags
Review count and SteamSpy's owner range agree well enough to narrow the estimate down to this band. Multiplied by $0.90, the average price these copies actually sold for — weighted from the price history rather than taken from the $0.99 launch price. That is 9% below list price on average. Before Steam's cut, VAT and refunds. How these numbers are calculated.
Waiting for 1+1=？ to get cheaper? Name your price and we will email you when it gets there.
Media
History
Tracking started Jul 31, 2026. Charts appear once there is more than one data point — nothing has changed since.
50 data points going back to Mar 5, 2025 lie outside the 90-day window of your plan. Plus shows the complete history.
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 1+1=？. 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) |
|---|---|---|---|---|---|---|---|---|---|
|
Your Mother | M for Mother 2 titles | 5 | − Cartoony + Emotional | $0.99 | 8,302 | 92% | Fri, Feb 28, 2025 | $178k $148k – $178k |
|
Monmusu Gladiator | ZephyrStudio 3 titles | 5 | − 2D + Roguelike Deckbuilder | $4.99 | 195 | 93% | Wed, Jul 14, 2021 | $41k $18k – $73k |
|
Your StepSister | StepBrother first game | 5 | − Cartoony + Emotional | $0.99 | 90 | 81% | Fri, May 09, 2025 | $3k $1k – $5k |
|
Marfusha:Sentinel Girls | hinyari9 2 titles | 4 | − Casual − Cartoony + Action Roguelike + Pixel Graphics | $7.99 | 3,096 | 94% | Thu, Aug 26, 2021 | $1.6m $1.6m – $2m |
|
CBT With Yuuka Kazami | Sigyaad Team 16 titles | 4 | − Female Protagonist − Cartoony + Visual Novel + Colorful | $0.99 | 1,159 | 98% | Mon, Oct 19, 2020 | $46k $21k – $46k |
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.