Through "Steamdb" you can buy items from the games, I checked, here is the list of games -
!4RC4N01D!
!4RC4N01D! 2: Retro Edition
AppleSnake
AppleSnake2
AppleSnake: Christmas story
AppleSnake: Halloween Adventures
JellyNoid
SnappleNoid
The Greedy MaxCoon

here you need to add - The Greedy MaxCoon 2 https://steamhost.cn/steamcommunity_com/id/ilya515/inventory/#833900_2_1894201730043583130

Super Duper Flying Genocide 2017
can be exchanged with the developer, for a reasonable price.
https://steamhost.cn/steamcommunity_com/profiles/76561198089020397/
(You can then delete the message later.)

!4RC4N01D! 4: KOHBEEP edition
https://steamhost.cn/app/824660/4RC4N01D_4_KOHBEEP_edition/
https://steamhost.cn/steamcommunity_com/id/ilya515/inventory/#824660_2_1894201730020417372
I bought from "Minepostol" - https://steamhost.cn/steamcommunity_com/profiles/76561197961053356/

Originally posted by LEO MACIEL:

How can you find out?
ilya515?

bought a year ago, was private, now appeared

Removed:
Emily is Away

Emily is Away
https://steamhost.cn/app/417860/Emily_is_Away/
https://steamhost.cn/steamcommunity_com/id/ilya515/inventory/#417860_2_1582260932996974200
I buy in Steamdb - https://steamdb.info/app/417860/items/

Leadwerks Game Engine
https://steamhost.cn/app/251810/Leadwerks_Game_Engine/
https://steamhost.cn/steamcommunity_com/id/ilya515/inventory/#251810_2_1815379849784120887
I buy in Steamdb - https://steamdb.info/app/251810/items/

RPS Runner
https://steamhost.cn/app/654670/RPS_Runner/
https://steamhost.cn/steamcommunity_com/id/ilya515/inventory?showpurchasemsg=1&purchasemsg=Your+purchase+is+complete%21++Purchased+items+are+now+in+your+inventory.#654670_2_1888570152687417416
I buy in Steamdb - https://steamdb.info/app/654670/items/

Removed:
Project FTM
REBOUND ARENA
Zeus' Battlegrounds
Leadwerks Game Engine