Trails beyond the Horizon Setup Guide

Alpha. A full playthrough has been beaten with this world, but expect rough edges. Please report anything odd.

What is randomized

Chests: the standard chests and hack boxes give an "Archipelago Item" instead of their normal contents; what they really hold comes from the multiworld.
4SPGs: side quests, bounties and the main requests on each chapter-end report (options).
Grim Garten: chests and domain clears, including repeat clears (options).
Acts: every act and route (Act I-A/B/C, each Act II and Act III route, the Finale) is an item. The game follows its own Time Chart order, but an act only starts once you have its item.
Goal: beat the final boss. The door after Mirabelle stays sealed until you have every act (and, with the Grim Garten goal, can reach every domain).

The Legend of Heroes: Trails beyond the Horizon (Windows), English script, unmodded. Tested on the Steam release; other stores (GOG and others) are untested so far: please report how they go.
Archipelago 0.6.7 or newer.

Install beyondthehorizon.apworld: double-click it, or put it in the custom_worlds folder of your Archipelago install. Restart the Archipelago Launcher.
Close the game. Open "Trails Beyond the Horizon Client" from the Launcher and type /install_patch.
- Choosing the game: a Steam install is found automatically. Otherwise a file browser opens: select the game's kai.exe. The choice is saved in Archipelago's host.yaml (trails_beyond_the_horizon_options > game_exe), so you only do this once.
- /game changes it: /game alone opens the file browser, or give the path to kai.exe or the game folder in quotes, e.g. /game "D:\GOG Games\Trails beyond the Horizon\kai.exe".
- It patches script_eng.p3a and keeps your original as script_eng.p3a.archipelago_backup.
- It only patches the file it was made for. After a game update (or with other mods installed) it refuses: verify the game files in your store and wait for an updated patch.
/patch_status shows whether the patch is installed. /uninstall_patch restores the original; verifying the game files in your store also does.

Start the game and load a save (or start a new game).
Open "Trails Beyond the Horizon Client" from the Archipelago Launcher and connect.
- Run the client without its window (--nogui) or play the game in borderless windowed mode: a fullscreen game can freeze the client's window, and the server then drops the connection.
The first save you load is linked to your seed. Saves from another seed are ignored.
Checks are sent the moment they happen. Received items go straight into your inventory and are listed in the client log (there are no in-game item popups for now).
When an act ends and the next one is locked, the game shows which item you need, with options to choose another route, check again, save, or return to the title.

Almost every check in this game is missable: once an act ends, its areas close. The Act Menu lets you go back.

Open it: hold R3 (press the right stick in) while opening the pause menu. On a keyboard, hold F1 instead. Change the key with the client command /act_menu_key <key> (for example /act_menu_key F2); it is remembered. The client must be running and connected.
Replay an act: acts you have cleared can be picked; the rest show "(locked)". Acts with several routes let you choose one. The act restarts from its opening scene. Opened chests stay opened, and your items, levels and finished checks are kept.
Return to current act: after replaying, this option takes you back to the start of the act you were on.
Not available inside Grim Garten.
Controllers: Xbox-style pads and PlayStation-layout pads (including controllers passed through as a PS4 pad) work.

Replaying an act re-marks a few story 4SPGs as done. They should still be completable again for their check; please report it if one is not.
Items arrive without an in-game message; watch the client log.
Grim Garten chests opened during a fight are only counted after the fight ends.