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The Sierra Network - Definition |
| Related Words: Arrangement, Cancellation, Circuit, Complex, Fret, Fretwork, Grating, Grid, Gridiron, Grille, Jungle, Labyrinth, Lace |
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 The main GUI interface for the ImagiNation Network shows the colorful art treatment meant to appeal to children. The ImagiNation Network, originally known as The Sierra Network, was the first online gaming network.
Games
ClubHouse
- Checkers
- Chess
- FlipFlop (previously called Reversi)
- Go
- Backgammon
- Bridge
- Hearts
- Spades
- Euchre
- Cribbage
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LarryLand
(a.k.a. CasinoLand)
- Poker
- Black Jack
- Craps
- Roulette
- Veracity
MedievaLand
SierraLand
- NTN Trivia
- Minigolf
- 3D Golf
- Paint Ball
- Boogers
- 3D Tic Tac Toe
- Red Baron (before Arena Land)
- Graffiti (collaborative art drawing board)
- Rocket Quiz (later moved into the school house)
- Stratego
FunHouse
Arena
History
Emoticons
INN had emoticons programmed into its system. The user just needed to type Alt+#, and it would give a corresponding face.
| Keystroke
| Emoticon
| Face
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| Alt+1 | Happy | 
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| Alt+2 | Sad | 
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| Alt+3 | Laughing | 
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| Alt+4 | Tears | 
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| Alt+5 | Kiss | 
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| Alt+6 | Angry | 
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| Alt+7 | Tongue sticking out | 
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| Alt+8 | Wink | 
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| Alt+9 | Heart | 
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| Alt+0 | Zero | 
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Protocol
The protocol was a simple stop-and-wait protocol with explicit acknowledgment of packets. Packets had a start marker, a sequence number, a 16-bit CRC, the data, and a stop marker. If the start or stop marker occurred within the data, it had to be escaped. All good packets received in the proper order were acknowledged. Any packet out of sequence cause a NAK for the missing packets that came before it. Any packet with a bad CRC also got a NAK. If a NAK was received, or an ACK did not occur within a reasonable amount of time, the packet was retransmitted.
They later moved to a sliding window version of the same protocol to cut down on the number of ACKs that were sent. This didn't change the packet format, but it did cut back on retransmissions.
External links
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