Theresia is a game developed by Japanese studio WorkJam and published by Aksys Games just for the Nintendo DS portable platform on September 11, 2008, in Japan, and on October 30, that same year, in North America, being one of the few DS titles that received the Mature rating from the ESRB organization, largely because of its graphic content.
Theresia can be classified as an adventure game with survival horror elements, in the vein of traditional Japanese visual novels, released by Aksys as part of its own mobile phone game series, and has a first-person perspective that depicts two different stories, each sharing a common background.
One is called Dear Emile, which sees players control a character called Emile and must battle with his own demons, fears or overcome various traps, while the other is named Dear Martel, and features a smaller story, designed to complete the events portrayed in the first one.
HINTS
Room items and actions The following is a list of items and actions that can be done in the various rooms.
1F - Past Moon Door - Central Management Room: Password is 0319 - Courtyard Water Fountain: Bullets, grate to downstairs - Courtyard Storage: Use gun on door (flashlight, blanket) - Courtyard Greenhouse (large): Use crowbar on door - Courtyard Greenhouse (small): pistol - Pethouse: Grate key, girl paper - Water fountain room: Garden key (use crossbow at the top of the fountain after using the neutralizer) - Stained glass: Use crowbar - Garden: Touch red flowers, obtain flower paper and mysterious key (R)