tModLoader Test app

A separate Steam app for testing Terraria, such as a staging branch, test server or playtest. It has no store page of its own: owners of the game get it in their library. It isn’t counted as a game or a release.

For: Terraria
Players now: 21,082
24-hour peak: 30,488
Highest we’ve seen: 31,208
Latest build: 1 Oct, 18:17 UTC
Steam App: 1281930

Players, Last 30 Days

Steam concurrent players, polled every 3 hours. We began tracking this game on 27 Oct 2026, so this range has no readings before then yet. Lines mark public builds and update posts we recorded; point near one to see what it was. As of 19:40 UTC.

Show the numbers

Players of tModLoader, last 30 days, newest first
Poll	Players
16:48 UTC	21,082
13:47 UTC	30,488
10:47 UTC	19,826
07:47 UTC	13,634
04:47 UTC	13,769
01:46 UTC	10,992
29 Oct, 22:46 UTC	10,486
29 Oct, 19:46 UTC	12,492
29 Oct, 16:46 UTC	18,310
29 Oct, 13:45 UTC	28,156
29 Oct, 10:45 UTC	17,451
29 Oct, 07:45 UTC	14,143
29 Oct, 04:45 UTC	14,140
29 Oct, 01:45 UTC	11,349
28 Oct, 22:45 UTC	10,990
28 Oct, 19:45 UTC	13,988
28 Oct, 16:45 UTC	19,131
28 Oct, 13:44 UTC	31,208
28 Oct, 10:44 UTC	19,192
28 Oct, 07:44 UTC	14,650
28 Oct, 04:44 UTC	14,102
28 Oct, 01:44 UTC	10,233
27 Oct, 22:44 UTC	4,339
27 Oct, 19:44 UTC	14,578

From the Steam Web API every few hours, last checked 16:48 UTC. Steam gives no count for an app nobody can launch, such as a closed playtest. We started counting on 27 Oct 2026. How we count

Public Builds

Public builds of tModLoader, newest first
Build	Went live	After the one before
25640906	1 Oct, 18:17 UTC	—

From Steam’s client network, within minutes of each change. Builds from before 27 Oct 2026, when we found this app, aren’t listed. How we count

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