I saw this calculator a few days ago, and I found that the mark was "TI nspire CAS" instead of "TI nspire CX CAS" or something like "TI nspire color CAS"
So I asked the seller for some pictures, here they are.
By the way, the seller told me that he had a PLT-FHH1, but the screen was broken and he doesn't have the right power adapter to test.

My English is poor,sorry about it,I hope you will like this game.

This is a port of a Chinese RPG called Legend of Sword and Fairy.Now all conversations have been translated into English.
The Legend of Sword and Fairy (simplified Chinese: 仙剑奇侠传), is an action RPG developed by Taiwan's Softstar Entertainment. Set in ancient China, the game is based on the Wuxia genre with elements of fantasy. With the first of the series released in 1995, the game became one of the most successful video game franchises in both Taiwan and mainland China.
Because of its huge size (about 24MB),now you can only play it on Nspire CX series.

Installation guide:
1\Download the resource pack
2\Choose your language specific pack
3\Extract them into a folder called 'nPal'
4\Copy this folder into your nspire
5\Click sdlpal.tns and enjoy~

If this game can't be started,just reset and try again.
If you see surface bilt error,just press continue.

Keymap:
Menu and Esc:Game menu
Enter and Space:Next
r:Repeat
a:Auto
d:Defend
e:Use Item
w:Throw Item
q:Flee
a:Status
f and 5:Force
p:Save Screenshot(Can be opened in mviewer)

Update:
RC1 Released!
New in RC1:
1\Fully translated.
2\Fix some display bug.
3\Fix some game script bug.
4\Fix cursor display bug.
5\Fix num key walk

Update from old version:Just delete 'nPal' folder and install new version.

I have just bought a prototype of TI NSPIRE CM-C.
I will test it tonight(I'm a Chinese,so about 1:00 GMT)