congratulations to people for getting these in on time!
although i've been offline for the past week (and will be for the next few days as well), i've been spending time thoroughly going over each of these games, making sure i've completed everything there is to do in all of them, in order to properly form an opinion. i'm not giving any official scores yet, but here are some overall reviews:
Spacky Emprise (buttsfredkin)
the graphics/story are a little odd and seem a bit haphazard, and the gameplay seems a little sparse (there is one enemy and two tile types). if this is your first released game, though, i'm impressed! a question: why do the tiles disappear on the left side of the screen? did you redraw the screen every frame and just not make the tilemap wide enough?

AXLE (tloz128)
the graphics are fantastic. the level design is a bit confusing and non linear. the character jumps too high and the horizontal momentum is more of a nuisance than a game element. the enemies work very well, and i didn't see so much as a single bug.

Fancy Pants Adventures World 1 Demo (Deep Thought)
it's cool, it's buggy, it's a bit hard to control, but it's fun. it isn't really much of a game in it's current state, but i'd absolutely LOVE to see this progress further =D

Nymless Demo (Freyaday)
i was only able to get one level to load. were there more than that? anyways, the character control is fine (although a bit difficult to get used to), the circles are AWESOME, the 'turn everything else grey' button is a useful feature, and the game play was a bit sparse. maybe that's because i could only get one level, though? am i missing something, frey?

Stick Ninja (squidgetx)
beautiful and hella buggy. the insta death fall hazzards which are ever present make health a bit pointless. the candles are a wonderful idea, but weren't utilised much. i really enjoyed the moving platform level.
bug list: loading/saving is broken. sometimes, the "load" or "new" options will make you spawn to the left of the furthest left wall on the map, letting you fall to your death. you are given 32 lives, so that takes a while. when facing left, the sword swing animations are mixed up with the door sprite. after meeting a game over, "new" will often times take you back to that level rather than restarting (in fact, this is the only way i was able to beat the game ). level... four i think it was (the one with the big tower of destructable blocks next to a bouncy tile) spazzes out sometimes when destroying the blocks on the top of the tower, seemingly propelling you into a random spot in RAM. restarting the app after this causes problems (up/down and clear are unresponsive. only 2nd does anything).
i really liked it, but it has too many playability issues in its current state to get my vote.

Escape (yunhua98)
well made, no bugs, a bit bland. it took maybe five minutes to beat, but the game didn't blow up while playing.

Tag (leafiness0)
the puzzles were fantastic, the different types of tiles added a lot of diversity, player control is a bit weird, but one can get used to it. it basically reused graphics from previous games (right down to the level select screen and the similarity in the title screen styling), which takes away from originality, but i loved it. i noticed two bugs: sometimes objects (like paint and blocks) will freeze in place randomly and on two occasions i was RAM cleared on exiting.

Dimension Shift (Darl181)
fairly entertaining. the puzzles weren't all that difficult, but they were entertaining. there was a LOT of archiving and unarchiving which i think could probably be avoided by reading the level data from archive and keeping the level number appvar in RAM. this resulted in frequent garbage collects, which hurt playability.

Easy Game (SirCmpwn)
...

Cube Droid (ztrumpet)
beautiful graphics, well designed elements, fun puzzles. it was a bit difficult to figure out at first without instructions, and it's basically a port, but i loved it all the same. no bugs to speak of.

i hope i didn't go through this too quickly. i have very little time before i have to leave.

ohithur, you!

most people come into calc programming without any experience in other places. it's a wonderful place to start if you plan to go on to develop for other platforms and a wonderful hobby if you decide to never progress further.
like everyone else, i'd recommend the 83/84 series just because the community for it is still so active and, because they've been around for so long, we know nearly everything there is to know about how they work (with one or two exceptions...).

there are three main methods used for programming the 83/84 series: BASIC, which is probably the easiest place to start, axe, which uses basic tokens and is easy to pick up, but allows much more functionality (especially now that quigibo released version 1.0 =D), and asm, which allows direct access to the hardware, but can be a little verbose and takes a while to learn. all three of these languages have 'addons' which can be used to increase their ease of use (and, in the case of BASIC, their speed). BASIC has asm libraries like Iambian's Celtic III, Xeda's Batlib, etcetera, which allow things like sprite commands to be put inline in your BASIC programs. axe has things called axioms, which are optional additions written in assembly which give more functionality. asm has libraries (like ion) which allow you to benefit from what other people have written already and not have to write it again.

the 83/84 line are my favourites, but that doesn't mean all the others are worthless. the Casio PRIZM, in particular, is looking very promising, as it already supports code in asm and C (which, if you don't know, acts as a standard coding language and has been implemented on thousands of different devices), and has a larger screen and 16 bit (i think) colour support. plus, if you buy your calc in stores (which i don't recommend, because TI overprices), it costs about the same amount as an 83+

i hope you are happy with your choice and have a wonderful time here!

oh, and do you play maple story? if so, you should check out wakfu. it's still in closed beta for NA, but i got a key yesterday and can say that it is, unquestionably, the best mmo i have every played.

=D i'm amazed that axe can just continually get faster like it has been for months now.

actually, i have a question to ask as well. which is more optimised?

if getkey(3)
+x->x
end
or
if getkey(3)
x++
end
the ++ and -- commands are a bit new, so i'm not sure how to go about using them yet. is there a difference in Inc vs. add in the way these are compiled?

hmm, maybe something went very wrong and the batteries were drained, flooding the LCD?
anyways, it seems that her calculator is not accepting the operating system on your calculator as valid for being run on her machine. are you using the same model as she is? you aren't trying to send 2.55 to an 83+, are you?
if that's not it then i don't know what could be going wrong...
EDIT: i just decided to read the topic title and realised that the 'defect' calculator is an 84+. are you trying to send and operating system from an 84+ or 84+SE calculator to it?

the outline on the scythe looks a little odd. maybe it would be better in grey? an rpg engine sounds wonderful, though. what sort of battle system are you planning?

so, in summary of what everyone has said so far, and laid out as clearly as i can:
-firstly, ensure you have a calculator of the same model as her calculator with you as well as a link cable that can connect the two
-secondly, remove the back of her calculator, take out one battery, hold the DEL key, and reinsert the battery while still holding the DEL key
-thirdly, press ON on her calculator. if everything has been successful it will show you the message:
Waiting...

Please install
operating
system now.
-fourthly, press ON, then another key when you see an error message, and then ON again to restart it. if all has gone well then you should see a Ram Cleared message.
-fifthly, if this does not solve the problem, repeat the DEL + Battery Insert step, but do not press on when you see the waiting message. instead, connect the two calculators via your link cable, on your calculator, navigate to the link screen (2nd + X,T,ө,N) and select the G:SendOS option. if you see an error message on her calculator then you most likely took too long and the sending has timed out. try it again. if it fails multiple times then it may mean that you are trying to send an incompatible OS from a different hardware model (if she has an 83+ make sure you have one as well. if she has an 84+ or 84+SE make sure you have one of those two as well, etc).
-sixthly, if you have started to send the OS properly you should see this message on her screen:
Receiving...
Operating
System
        [%received]
wait until the percentage reaches 100, you see Validating, and the calculator shuts itself off. this should solve the issue, and if it does not i don't have any further suggestions. good luck!