Sonic the Hedgehog 4 - Episode I is tracked on SteamScope with live Steam concurrent player data, historical charts, and a SteamScope activity score of 49/100. Search for "Sonic the Hedgehog 4 - Episode I player count" or "Sonic the Hedgehog 4 - Episode I steam charts" to monitor how many people are playing right now and how activity compares with past peaks.

Sonic the Hedgehog 4 - Episode I is developed by SEGA, released 19 Jan 2012. Available on Windows.

Sonic the Hedgehog 4 - Episode I currently reports 5 concurrent Steam players with a 24-hour peak of 5 and an all-time peak of 5.

Among tracked Steam titles, Sonic the Hedgehog 4 - Episode I ranks #10466 of 14,838 by momentum score.

Sonic the Hedgehog 4 - Episode I has lost momentum recently. Retention sits at 100/100, suggesting fewer players relative to its all-time peak of 5.

Sonic the Hedgehog 4 - Episode I has 12 Steam achievements tracked on SteamScope.

The average global unlock rate across all achievements is 19%, giving a baseline for overall completion difficulty.

The most common achievement is "The Story Begins" with a 75.6% unlock rate.

The rarest achievement is "Enemy Hunter" — only 3.0% of players have unlocked it (Very Hard).