{mod: changed topic name, as requested }

The Aleste-airplane DIY-kit. Never knew it existed.
http://kelesis.free.fr/hp/compile/aleste2msx/plane/index_eng.htm

Heh, it's included in the original Aleste 2

HAHAHA, super!
just like the Fray eeh pleisters(?) that came with xak.

Great! My brother has a game called "Murder on the atlantic" that literaly comes with a bag of extra's. You need them to play the game. There's a bullet, a piece of newspaper and some braille-code.

The MSX version After Burner actually came with a voucher with which you could win a Concorde Flight. Some questions about Concorde and a "finish this line"-line, stating: "If I flew a Tomcat into a dogfight I would..."

...well I would most probably be a jetfighterpilot .

Let's rename this topic as "weird extra's". Any more weird extra's?

-Aleste 2 --- Paper airplane kit
-Fray --- Plasters
-Murder on the atlantic --- bag of clues
-After Burner --- win a Concorde flight competition

- Salamander -- A phone card
- Dragon Slayer VI -- An awesome map of the DS6-world

The Lost World - A kingsized manual without box (i'd say thats weird)

Burai Last Volume - playing cards and some other stuff. (Extra booklets maps and some other thingies.) - (Really would love to see this one translated but I guess that will never happen.)

auf wiedersehen monty came with a button

pippols came with a DIY farmerset (including that hat,seeds and a little waterer with the konami logo on it)

Arkanoid 2 comes with a special controller .. it's not required to play with it tho .. can it be considered a bonus then?

* OutRun (the msx1 version) came with a tape with the original arcade music.
* Hydlide 3 came with a type with a tape with various game music

Xak 2 - Some weird piece of plastic with the in-game characters on it, I suppose it's some kind of patch which one could stick onto a t-shirt by ironing or so. By the way, Fray didn't come with sticking plasters, that was Xak: The Tower of Gazzel instead .

Rune Worth: a normal manual, a map chart and a manual with some kind of cotton cover

Princess Raper: A3 miniposter, big sized box with a huge pile of disks in it

Bombaman: Extra CD

Maison Ikkoku Final: Some sticker papers and a picture postcard.

Daisenryaku: in-game vehicles statistics chart.

Jotunn (Xain): Gold-labeled disk, The Book Of Play (probably a user manual ) and a quickmanual.

Moonlight Saga: Really, really, really nice box

well, i first posted about lost world.. but another dutch production also came with a "weird" item.
Thunderbirds !!! with an audio-cd with all tracks incl bonus (midi) tracks.

IIRC D.A.S.S came with an audio-tape.

so that makes at least 3 dutch productions with additional stuff.

EDIT;
mr i-cut-my-hair-off mentioned Bombaman. that's 4 dutch productions.

EDIT2:
oh, D-Tail corrects me.. it was ToG.. but i'll correct you too mate. its not a princess RaPer

well, let me continue:
MAGNAR came with not just a manual. you had to type pieces of manual to play the game (sort of copyprotection).
and their other game... eeeh.. (NAME???) came with a cartridge as copy-protection.

*name of game... hmmm

How 'bout Super Tetris II then. Came with a nice copyprotection joystickport dongle filled with glue ;P