The best diplomacy indie games, ranked by reviews

Data report Built from live indielist data on 2026-07-24. Rankings update as data changes.

indielist tracks 10 diplomacy indie games on Steam, holding 28,032 reviews at an average of 80% positive. This list ranks them by Steam review count, the most reliable public sales proxy, with a white-box sales estimate behind every title. The most reviewed is HighFleet with 6,953 reviews. Figures are tracked by indielist; sales numbers are estimates that each expand into their full formula.

The ranking

1. HighFleet · 6,953 reviews · 88% positive · 2021
2. Democracy 4 · 5,859 reviews · 82% positive · 2022
3. Guilty as Sock! · 4,699 reviews · 90% positive · 2025
4. Cepheus Protocol · 3,683 reviews · 76% positive · 2020
5. Dummynation · 3,045 reviews · 88% positive · 2022
6. Microcivilization · 1,421 reviews · 79% positive · 2026
7. Arms Trade Tycoon: Tanks · 974 reviews · 68% positive · 2024
8. Interstellar Space: Genesis · 708 reviews · 84% positive · 2019
9. Lawgivers II · 690 reviews · 70% positive · 2023
10. SUPREMACY: WORLD WAR 3 · 0 reviews · 75% positive · 2018

How this list is built

Games are ranked by Steam review count, the most reliable public proxy for sales when actual figures are private. Each title links to its indielist page, where the white-box sales estimate expands into the full Boxleiter formula, so you can audit the number rather than trust a black box. Review counts come from Steam; sales figures are estimates, not official sales data.

Want the underlying estimate for your own game? Try the sales estimator, or browse the full game directory.