What are the best moddable indie games under $20?

indielist lists 48 paid moddable indie games priced at or below $20, ranked by Steam reviews, led by Garry's Mod (1,072,116 reviews). The cheapest is Natural Selection 2 at $4.99.

How is this "under $20" list built?

By a data filter, not opinion: a paid moddable game qualifies if its tracked Steam list price is at or below $20. The list is ranked by review count and updates as prices and the catalog change. Free-to-play games are excluded.

Best Moddable indie games under $20

These are the best moddable indie games you can buy for under $20. indielist lists 48 paid moddable games with a list price at or below $20, ranked by Steam review count so the most-validated picks lead. The average list price here is $14.68, and the cheapest is Natural Selection 2 at $4.99. The most reviewed is Garry's Mod with 1,072,116 Steam reviews. Beyond the budget end, this wider list adds 30 mid-price picks between $10 and $20 that a stricter under-$10 list leaves out. Every price is the tracked Steam list price, not an estimate, and each game links to a white-box sales estimate you can open and audit rather than a black-box number. This is a value list: a sensible price crossed with real player validation, so you can find a moddable game that is actually good, not just affordable. Free-to-play titles are excluded here; this is about paid games that punch above their price.

Games

Avg list price

$14.68

Cheapest

$4.99

Frequently asked questions

What are the best moddable indie games under $20?: indielist lists 48 paid moddable indie games priced at or below $20, ranked by Steam reviews, led by Garry's Mod (1,072,116 reviews). The cheapest is Natural Selection 2 at $4.99.
How is this "under $20" list built?: By a data filter, not opinion: a paid moddable game qualifies if its tracked Steam list price is at or below $20. The list is ranked by review count and updates as prices and the catalog change. Free-to-play games are excluded.