Mobile game · 2015

Radiation Island

Radiation Island is a survival adventure game where you craft your own destiny in a huge open world environment. As part of the Philadelphia Experiment you have become stranded in a parallel, alternate reality. Discover this new and mysterious world, with all its surprises. Use everything you find to survive it and solve its puzzle to get back to the real world.

Estimated daily players

~5,0000.0%

Range 390–33K

Estimated total players

~100,0000.0%

Range 39K–220K

See what's trending

Estimates, not counts — nobody publishes real player numbers for mobile games, so these are modelled from public signals. How we work them out

Jan 29, 2015Android iOSCERO CESRB 18PEGI M

Adventure Indie Shooter Simulator Action Open world Sandbox Survival

Get the game

Google Play App Store (iPhone)App Store (iPad)

What the estimate rests on

Google Play 56%
App Store 29%
Steam 15%

Player estimates

Nobody publishes how many people play Radiation Island, so these figures are modelled from the public counts on Google Play, App Store, Steam, Twitch. Each count stands in a roughly known ratio to a population — one Play rating per ~45 players, one Steam review per ~35 owners — and the estimates below combine those readings, weighted by how much each source can be trusted to speak for the whole game. Read the range as the answer and the headline as its middle.

Estimated daily players

~5,000

0.0%

Range 390 – 33K

No source reports a live count for this game, so this is a share of the total player base — a genre assumption rather than an observation, which is why the range is wide.

Estimated total players

~100,000

0.0%

Range 39K – 220K

Everyone who has ever played, from the cumulative counts: store ratings and installs, Steam reviews, members and subscribers.

Estimated total players over time

3 readings · last 3 days

Average estimated players per month

Mean estimated total players for Radiation Island per calendar month, newest first
Month	Estimated total players	Change
August 2026	~66,000	—

Community activity

Last checked Aug 10, 2026

Store signals

How many people have rated, reviewed or installed Radiation Island where it is sold.

Google Play ratings

3,218

Average rating: 3.4
Installs: 100K+

First reading taken Aug 9, 2026 — the chart appears once there are two.

App Store ratings

649

0.0%

Average rating: 4.3

Steam players in game

Reviews: 637

First reading taken Aug 9, 2026 — the chart appears once there are two.

Community signals

How many people gather around Radiation Island outside the stores — members, subscribers and live viewers.

Twitch viewers

Live channels: 0

First reading taken Aug 9, 2026 — the chart appears once there are two.

Not tracked for Radiation Island: Discord, Reddit, YouTube. A platform appears here once the game has a link to it — most mobile games have no Steam port or subreddit, so a gap is normal rather than a sign the game is small.

Trailer

Screenshots

Frequently asked questions

How many people play Radiation Island?

We estimate that about 100,000 people have played Radiation Island — plausibly between 39K and 220K. Around 5,000 of them play on a given day, in a range of 390 and 33K. Both figures are modelled from public counts on Google Play, App Store, Steam and Twitch rather than published by the developer, so read them as a scale rather than as a headcount.

Is Radiation Island still active?

Yes. Radiation Island is holding steady — it measured within a percent of where it was a week ago. We recheck every source daily, and the charts on this page show each platform's readings over time.

How are the Radiation Island player estimates worked out?

Nobody publishes player counts for mobile games, so we infer them. Each public count we can read is converted into a population using a documented ratio — roughly one Google Play rating per 45 people who played, one Steam review per 35 owners, one Discord member per 40 players — and the live counts (Steam concurrents, members online, Twitch viewers) are converted the same way into a daily figure. Those separate estimates are then averaged in proportion to how much each source can be trusted, which is why sources that disagree widen the published range instead of cancelling out. This page is built on 3 readings taken since August 8, 2026.