現在Steam點數商店可用500點數換取個人檔案背景，前提是帳號中擁有該遊戲(少數例外)
有些免費制遊戲(比如MMO)也有提供個人檔案背景，這樣不用花錢買遊戲即可換取背景
我整理的是免費遊戲中美少女向的背景，這種市集會賣貴一點，少數便宜的我會再註明
要注意的是，部分免費線上遊戲鎖台灣區，商店頁不能看，但有取巧辦法讓遊戲綁定帳號
6/29 新增一組Age of Magic CCG - Viv Windwalker
7/1 注意兌換規則已修改，現在遊戲時數要滿2小時才能兌換背景!只好用掛卡程式了...
(1).鎖區遊戲：
*繞過商店頁直接綁定到帳號步驟：
進入該遊戲的SteamDB網頁
→點右上角Install綠色按鈕
→自動開啟Steam程式並跳出一個遊戲下載視窗，另一種情況是寫無法在該地區執行遊戲，
關掉視窗即可，不用真的下載遊戲
→這樣遊戲就自動綁定到帳號了，點數商店可開始兌換
https://i.imgur.com/09NJjm8.png
(到帳戶詳細資料看到是「贈品」且可以移除的就是免費制遊戲)
以下遊戲我會都會列出市集、點數商店、SteamDB網頁
Age of Magic CCG - Viv Windwalker
https://i.imgur.com/ck4LnzD.jpg
https://steamcommunity.com/market/listings/753/426970-Viv%20Windwalker
https://store.steampowered.com/points/shop/app/426970
https://steamdb.info/app/426970/
Echo of Soul - Guardian
https://i.imgur.com/pxZLObk.jpg
https://reurl.cc/D9kAN5
https://store.steampowered.com/points/shop/app/290140
https://steamdb.info/app/290140/
GunZ 2: The Second Duel - A.C.S.S. Misha
https://i.imgur.com/ByPC7Dk.jpg
https://steamcommunity.com/market/listings/753/242720-A.C.S.S.%20Misha
https://store.steampowered.com/points/shop/app/242720
https://steamdb.info/app/242720/
Mabinogi - Devil Costume
https://i.imgur.com/7YaXHyD.jpg
https://steamcommunity.com/market/listings/753/212200-Devil%20Costume
https://store.steampowered.com/points/shop/app/212200
https://steamdb.info/app/212200/
TERA - Castanica
https://i.imgur.com/fQ6H9mK.jpg
https://steamcommunity.com/market/listings/753/323370-Castanica
https://store.steampowered.com/points/shop/app/323370
https://steamdb.info/app/323370/
以下兩款沒法靠SteamDB，要掛VPN才能綁定帳號（抱歉之前我沒查清楚）
VPN領取遊戲方法參考keylol論壇文章：
https://keylol.com/forum.php?mod=redirect&goto=findpost&ptid=219173&pid=3195571
Eternal Magic - Gunslinger
https://i.imgur.com/IzOrSQm.jpg
https://steamcommunity.com/market/listings/753/1153700-Gunslinger
https://store.steampowered.com/points/shop/app/1153700
https://steamdb.info/app/1153700/
MU Legend - Whisperer
https://i.imgur.com/jAB9z0d.jpg
https://steamcommunity.com/market/listings/753/874240-Whisperer
https://store.steampowered.com/points/shop/app/874240
https://steamdb.info/app/874240/
(2).無鎖區遊戲：
跟前面原理一樣，在商店頁點選安裝遊戲後再取消安裝，不用下載遊戲就會自動綁定帳號
Archeblade - Ridika The Temptress
https://i.imgur.com/qgmETXm.jpg
https://reurl.cc/d0kVgy
https://store.steampowered.com/points/shop/app/207230
Dragon Blood - Sagittarius Goddess
https://i.imgur.com/xaV5XLm.jpg
https://steamcommunity.com/market/listings/753/562840-Sagittarius%20Goddess
https://store.steampowered.com/points/shop/app/562840
KurtzPel - Marian&Lire
https://i.imgur.com/yiB9Rl8.jpg
https://steamcommunity.com/market/listings/753/844870-Marian%26Lire
https://store.steampowered.com/points/shop/app/844870
Metal Waltz - Jenny Khloe
https://i.imgur.com/q86RVtS.jpg
https://steamcommunity.com/market/listings/753/581130-Jenny%20Khloe
https://store.steampowered.com/points/shop/app/581130
以下幾張在市集很便宜，可以考慮直接用買的
Kritika:REBOOT - The Reaper
https://i.imgur.com/rL6SnnE.jpg
https://reurl.cc/oL296q
Kritika:REBOOT - The Rogue
https://i.imgur.com/ILPaXok.jpg
https://reurl.cc/X6Megg
Onmyoji - Kagura
https://i.imgur.com/fxaCpGU.jpg
https://steamcommunity.com/market/listings/753/551170-Kagura