A lightweight battle royale aimed at budget Android phones. You get fifty-player matches on one map, a cartoon look borrowed from Fortnite, and gunplay that feels a lot like Free Fire. The whole thing fits in a 230 MB install and runs on a 5.0 phone with 2 GB of RAM.
What is Sigma
Sigma is a third-person battle royale shooter made by Studio Arm Private Limited. If you have played Garena Free Fire or PUBG Mobile, the loop is instantly familiar. You drop from a parachute onto a deserted island with 49 other players, raid buildings for guns and armour, keep ahead of the shrinking zone, and try to be the last one alive.
The game is tuned for the low end. It runs on Android 5.0 with 2 GB of RAM, the install stays under 250 MB, and the cartoon art keeps the GPU from working too hard. That makes it one of the few battle royale picks for people on cheap or older phones who cannot run the official Free Fire build without stutter.
You get the usual 50-player solo and squad rounds, a 4v4 deathmatch when you only have a few minutes, and a sniper-only playlist. The weapon count sits north of twenty and covers every class you would expect: assault rifles, SMGs, shotguns, snipers, and a handful of melee options.
Key features
Single-map drops with a shrinking zone, vehicles, loot crates, and the battle royale endgame everyone knows.
Built-in voice chat for 4-player squads, plus quick-ping callouts so players without a headset can still communicate.
A 230 MB install with an Android 5.0 floor. It holds a playable framerate on 2 GB RAM phones where Free Fire chokes.
Assault rifles, SMGs, shotguns, and snipers, plus a sniper-only playlist for anyone who likes to fight at range.
Dozens of character looks to unlock, along with gun skins, parachute trails, and victory emotes.
Stylised characters and a bright island palette. The look sits closer to Fortnite’s art direction than the gritty realism of PUBG Mobile.
Screenshots
App info
- Developer
- Studio Arm Private Limited
- Package
com.studioarm.sigma- Version
- 1.1.0
- Size
- 230 MB
- Min Android
- 5.0+
- Category
- Games / Action
- Rating
- 3.9 (3,381 reviews)
- Cost
- Free, with optional in-app cosmetics
What this mod offers
-
Unlimited diamonds in the shop
Premium currency starts high. The cosmetic shop, the character pass, and the gun-skin store all open up without grinding matches to earn it.
-
All character skins available
Seasonal and event-locked outfits already read as owned on the loadout screen. There is no event grind and no limited-time window to beat in this build.
-
Weapon and parachute skins unlocked
The full set of gun cosmetics, parachute trails, and victory emotes is sitting in the wardrobe from the start.
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No mandatory ads
The post-match ad break and the rewarded-ad prompts are gone in this build. When a match ends, it drops you straight back to the lobby.
How to install
- Download the APK
Use the green button at the top of this page. The file is about 230 MB, so on a 4G or 5G connection the download wraps up in a couple of minutes.
- Enable installs from this source
On Android 8 and newer, the system asks the first time it sees an APK coming from your browser. Tap the prompt and turn on the install permission for that browser only.
- Open the downloaded APK
Tap the file in your Downloads folder, or open it from the browser’s download notification. The Android package installer opens and lists the permissions it wants.
- Tap Install
Confirm the install. Let the progress bar finish, then tap Open to launch the game.
- First-run setup
Accept the standard storage and microphone permissions. The microphone is only for in-match voice. The lobby loads with your mod balance and the unlocked wardrobe already in place.
What’s new in 1.1.0
- New cartoon-island map regions with extra loot zones around the central docks.
- Sniper-only playlist added as a permanent rotation alongside the 50-player and 4v4 modes.
- Twelve new character skins and three new gun-skin lines, all accessible from launch in this mod build.
- Performance pass on rendering for older Adreno and Mali GPUs, smoothing the framerate on 2 GB RAM phones.
- Squad voice chat reliability fixes on weaker mobile data connections.
FAQ
- Is Sigma the same as Free Fire?
- No. Sigma is a separate game from Studio Arm Private Limited. It uses the same battle royale formula and a similar cartoon-styled look, but the engine, character roster, and progression are independent. Free Fire is published by Garena. Sigma is often picked up by players whose phones cannot run Free Fire smoothly.
- Is Sigma on the Google Play Store?
- Sigma is not currently listed on Google Play in most regions. Studio Arm distributes the build through their own channels and through APK aggregators. Some readers may find it on Play in a small number of markets. If you cannot find it on Play, the APK on this page mirrors the same official release used by sites like ApkPure and HappyMod.
- How is the mod build different from the original?
- The game modes, maps, and shooting feel are identical. The mod build sets the premium-currency balance high so the cosmetic shop, character pass, and gun-skin store are accessible without grinding matches. The post-match ad break is also stripped out.
- What Android phone do I need to run Sigma?
- Sigma 1.1.0 runs on Android 5.0 and above. The install is around 230 MB. The minimum spec is 2 GB of RAM. That makes it one of the few battle royales with a real shot at running on entry-level Android phones from 2018 and later.
- Is the Sigma mod APK safe to install?
- The build mirrored on this page is the file packaged on the AN1 source. We do not modify the package after fetching. The Sigma mod is a community-built variant, not affiliated with Studio Arm. Treat any sideloaded APK like a permissions audit: only grant the storage and microphone access the game asks for, and skip any prompt outside the game.
- Can I play Sigma offline?
- The lobby, wardrobe, and settings work offline, but every match needs an active internet connection. The matchmaking and the 50-player session run on Studio Arm’s servers, so the actual battle royale rounds require data or Wi-Fi.
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