Everything EspressU does

Graphics and speed

EspressU draws with Metal, Apple's own graphics API, and keeps a persistent shader cache so games compile fewer shaders the next time you play them.

• Graphics settings, a Display page, and a performance overlay you can turn on to watch how a game runs.
• Options per game, so one game's tweaks don't change another's.

Built-in JIT

JIT is what makes games run at a playable speed. EspressU includes an ARM64 recompiler for iOS 17.4 and later, with a JIT page in Settings.

• Import your pairing file and connect LocalDevVPN.
• JIT starts on its own when you launch a game.
• Without JIT, the much slower interpreter runs instead.

JIT setup steps

Controls

Play with a controller or on the touch screen.

• Controllers: DualSense, Xbox and MFi.
• On-screen GamePad: a touch pad you can lay out yourself.
• Motion and aiming: its own settings page.

Games and library

Bring your own legally dumped games. EspressU opens .wua files, decrypted folders, or encrypted ones with your own keys.txt.

• Updates and DLC can be imported.
• Organise your library, and fetch cover art for it.
• Graphic packs for games that have them.

Make it yours

EspressU has a library of colour themes for the whole app. A few of them:

Your data

EspressU includes no firmware, keys or games. You use your own Wii U keys and your own dumps.

• Back up your settings and restore them later.
• Your library and files stay on your device.