Riot Games is making the biggest technical change in Teamfight Tactics history. Starting with Set 18 on August 12, 2026, TFT is leaving the Hextech engine (the one it has shared with League of Legends since 2019) and switching to Unreal Engine.

Teamfight Tactics Set 18: Unreal Engine Migration Reference

System LayerOptimal Settings & Meta ConfigurationsRelease Schedule

* Set 18 PBE: Opens July 14, 2026 for an extended four-week testing window.

* Live Launch: Set 18 Enchanted Wilds officially deploys on August 12, 2026.

* PC Client Split: Standalone PC launcher goes live October 9, 2026 (4 patches post-launch).

Expect Initial Volatility: The team is anticipating higher day-one bug counts due to the engine swap. Utilize the extended PBE window to spot edge-case bugs early.

System Migration

(Hextech to Unreal)

* Fully decouples TFT from the League of Legends Hextech engine framework.

* Establishes an independent, scalable pipeline for Set 20, Set 22, and beyond.

* App updates automatically on mobile; no manually forced uninstalls required.

Backup Settings Safely: The migration will completely wipe all custom game settings and cosmetic loadout favorites. Take screenshots of your UI toggles before August 12. PC Minimum Specs

* OS: Windows 10 (Version 19041 or higher).

* API Graphics Support: DirectX 11 (Feature Level 4.3).

* Architecture: Shader Model 5.

Check Legacy Hardware: While standard machines running the old client will clear this baseline easily, double-check specs if playing on low-end hardware.

Mobile Hardware Cuts

(Dropped Support)

* iOS Architecture: All devices featuring 2GB of RAM or less are discontinued.

* Android Architecture: All devices featuring 2GB or 3GB of RAM are discontinued.

Audit Specs Early: If your mobile phone sits right at or below these memory limits, you must upgrade your hardware to access the game after August 12.

Account Continuity

(Assets & Currency)

* Riot Account Profile: Remains completely unchanged.

* Currencies: RP (shared with League), Realm Crystals, and Treasure Tokens carry over.

* Cosmetics: Every accrued Tactician, Arena, and Boom transfers to the new engine.

Preserve RP Reserves: Baseline economies are fully preserved. You do not need to liquidate shared currencies or rush store purchases before the patch day.

ARAM Companionship

(Long-Term Phase Out)

* Legacy Items: All existing Little Legends will retain ARAM companionship functionality.

* Future Items: Tacticians released after the Unreal update will not support ARAM.

Track Store Tagging: If you cross-play both League and TFT, focus on collecting current Tacticians if using them in ARAM remains a priority for your account.

This is not a sequel. It is not a reboot. Riot has been clear that the game will still feel like TFT when Set 18 launches. But there are real, player-facing changes coming with this update, and a few of them will catch people off guard if they are not paying attention now.

Here is what changes, what stays the same, and what you need to do before August 12.

Why Riot Is Leaving the Engine That Built TFT

TFT launched in 2019 as a game mode inside League of Legends, built on the same Hextech engine that runs League. It was fast to ship (about 18 weeks from concept to launch), but over time the shared engine became a real limitation.

Any TFT update that touched engine-level systems had to work around League of Legends’ own update schedule. That created delays, constraints, and a ceiling on what the TFT team could independently build. Moving to Unreal gives TFT its own foundation, separate from League, where Riot can build dedicated tools and technology specifically for the game.

The team also pointed to long-term goals. Riot wants TFT to be a “forever game” that keeps growing for years. The Unreal move is not about what players see in Set 18. It is about what becomes possible in Set 20, Set 22, and beyond.

Set 18 itself, called Enchanted Wilds, should feel like a normal TFT set in terms of gameplay and visual quality. The engine upgrade is mostly under the hood for now.

What Actually Changes on August 12

Your Settings Are Getting Wiped

This one stings a little. When the game migrates to Unreal, all preferred settings will be reset to default. That includes everything you have adjusted in the settings menu and anything you have favorited in your cosmetics Loadout.

Take screenshots of your current settings before August 12 if you want to re-apply them quickly after the update.

The First Patch Is a Big Download

The initial Set 18 patch will be noticeably larger than a standard TFT update. After that first download, patch sizes should return to normal. On mobile, the existing TFT app will be automatically replaced with the new Unreal-based version. No manual uninstall needed.

Some Mobile Devices Lose Support

This is the most impactful change for lower-end mobile players. Riot is dropping support for:

  • iOS devices with 2GB RAM

  • Android devices with 2GB and 3GB RAM

If you play on an older phone, check your device specs before August. Riot noted these devices make up a small portion of TFT’s global install base, but they will no longer run the game after the switch.

PC Gets New Minimum Specs

Updated PC minimum requirements for TFT with Unreal:

  • Windows 10 (Version 19041 or later)

  • DirectX 11 (Feature Level 4.3)

  • Shader Model 5

If your PC already runs TFT, you almost certainly meet these. But it is worth checking if you are on an older machine.

What Stays the Same

A lot of players have been asking about their progress and purchases. Riot has confirmed:

  • Your Riot account login stays the same

  • All cosmetics carry over to the new engine’s Loadout system

  • All currencies carry over, including RP (shared with League) and all TFT-specific currencies

  • Game balance is not expected to change because of the engine swap

The biggest clarification Riot gave: this is not TFT 2. The same team is behind it. The game just runs on a new engine.

The Standalone TFT PC Client Is Coming Too

Separate from the engine change, Riot is also launching a dedicated TFT PC client. Right now, TFT on PC runs through the Riot client shared with League of Legends.

Set 18 launches on August 12 on the existing client. Four patches later, on October 9, 2026, the standalone TFT PC client goes live. That client will also have an extended PBE test period before full release.

This means TFT players will eventually be able to launch the game without opening the full Riot launcher at all.

Expect More Bugs Than Usual at Launch

Riot has been upfront about this. Running TFT on a new engine for the first time means more bugs than a standard set launch. That is exactly why Set 18’s PBE period is longer than normal.

Set 18 PBE opens July 14, 2026 and runs for four weeks. Riot is specifically asking players to jump in during PBE and report issues, since the team expects more edge cases than a typical set.

The engine switch should not affect game balance directly, but bugs can always create indirect gameplay issues. So if you can test on PBE, it is worth doing this cycle more than any other.

Little Legends as ARAM Companions: A Long-Term Change

One smaller detail worth knowing if you use Little Legends in ARAM. Riot confirmed that new Little Legends released after the Unreal migration will eventually stop supporting ARAM companionship.

Existing Little Legends will still work as ARAM companions. And Riot says they plan to keep supporting both modes for a while. But long-term, as they build more Unreal-native Tactician options, ARAM companion support for new Little Legends will be phased out. If ARAM companionship matters to you, note that this applies only to new Little Legends going forward, not anything you already own.