Indiket has updated his OpenTyrian port to version 0.2.

Here is a translation of the update:

-- Updated to version rev. 720 Classic. 
-- Amended fmopl.c using code from the PSP version. It reduces a little sound quality to be less stressful on the CPU. 
-- Implemented preliminary routines to load and save. OpenTyrian can save and load games from the VMU. 
This has to be in the port A1, and always takes 7 blocks, regardless of the number of saves. 
-- Added icon on the VMU loading the game, and also in the VMU file. 
-- Added support for 2 players. The controls have changed from the previous version: 
Player 1: move the ship with digital (rather than analog), shoot with A, B, X and triggers, change shape with start. 
Player 2: Analog stick moves ship, A shoots laterally, B shoots two weapons at once, and start changes shape with. 
-- Added pregenerated music (WAV) instead of emulated. The DC will be load into memory the songs that you ask (be careful with the jukebox).
-- The game freezes upon entering the instruction section. 
-- There is no network gaming support.

Source: DCiberia