History VideoGame / MegaManBattleNetwork1

** In this game and ''2'', the Navi Customizer doesn't exist. They instead have purchasable Powerups that permanently upgrade the [=MegaBuster=].
** Folder building balance is much different than all later games. The only chip types are normal and Navi, you can have up to 10 copies of a single non-Navi chip in your folder, there is no Regular Chip system (and thus no MB values for chips), and there's no * code to act as a wildcard and allow more build flexibility. You can also have duplicate Navi Chips, though you're restricted to 5 copies of a specific one and can only have a total of 10. ''Battle Network 2'' would lower the normal chip limit to 5, which would become the standard until the final game.

** Mine, [=BubbleWrap=], and what would later be known as Tornado are all claimed from viruses in this game and have three versions.

** You can have up to 10 copies of a single chip in your folder. Your folder's Navi Chip capacity is at 10, with a cap of 5 copies of one. The caps were lowered to 5 for the next game, and further refined afterwards to disallow dupes of Navi Chips.
** There is no *-code to act as a wildcard, making it difficult to build a monocode folder.

** In this game and ''2'', the Navi Customizer doesn't exist, instead they have Powerups that only upgrade [=MegaMan=]'s buster.
** You can have up to 10 copies of a single chip in your folder. Your folder's Navi Chip capacity is at 10, with a cap of 5 copies of one. The caps were lowered to 5 for the next game, and further refined afterwards.

** Some characterization differences: Lan is much snarkier than his later IdiotHero self. He's not at all thrilled to have Mayl drag him to school so she can chat about the plot and he mocks Dex's boasts about taking on WWW viruses. Yai is more helpful, occasionally giving hints to Lan and has the ability to show gratitude instead of bragging about her superiority.

** The main internet area looks very different than it did in later games -- it's a mostly-incomprehensible maze with a few chip salesmen scattered over and no real pattern, whereas later games tended to make it much more orderly and distinct for each region. Indeed, because the first game has the same background for all parts of the Internet, it's impossible at a glance to tell the difference between the "regular" Internet and the Undernet.

** Chip Traders don't autosave, so they're vulnerable to SaveScumming.
** Escaping battles strictly requires the Escape chip. ''2'' introduces the L button as an escape option (with a chance to fail) but retains the chip, while the third game onward removes the chip completely.

** As soon as you can use the Metro, you're prompted to pay Yuichiro Hikari a visit at work. He's not in, but while you're at the office you can find a photo of his family [[spoiler: revealing that Lan is not an only child]], and talk to some Navis in the large workstation who tell you about an experimental Navi with human genetic data.

** Lan is much snarkier than his later IdiotHero self[[note]]He's not at all thrilled to have Mayl drag him to school so she can chat about the plot and he mocks Dex's boasts about taking on WWW viruses[[/note]], and Dex refers to [=GutsMan=] as a commercial model.

* OutOfCharacterMoment: The [=ClockMan=] scenario in the UpdatedRerelease ''Operate Shooting Star'' takes characterization notes from ''Anime/MegaManNTWarrior'' rather than the original game, which really shows in the suddenly [[ShipTease romantic undertones]] of the scenario. The attempt to capture the ShipTease of the anime jars against the rest of the game, where Lan has much less in the way of heroic impulses, and [=RockMan=] and Roll had no romance at all.

** You can buy Elemental Armors that halve all damage that isn't from the armor's elemental weakness.

** You don't have the *-code wildcard, making it difficult to build a monocode folder.
** Your maximum custom screen capacity is 15. While your opening hand starts at 5, the "Add" function lets you, at the cost of fighting with no chips for a round, temporarily increase capacity by 5 for the next round. Adding a second time in a row pushes to the cap of 15, but it all resets once you stop Adding. The Add function would be reworked into a DiscardAndDraw mechanic with more lasting perks in the second and third game.
** HP values for enemies were much lower in the first two games. With the Navi Customizer comes massive HP spikes for both players and enemies.

** There was also a general willingness to be more sexually explicit in the early games. In the first game, you can walk in on Mayl changing clothes or discover Dex has a PornStash.

** The main internet area looks very different than it did in later games -- it's a mostly-incomprehensible maze with a few chip salesmen scattered over and no real pattern, whereas later games tended to make it much more orderly and distinct for each region. Indeed, because the first game had the same background for all parts of the Internet, it's impossible at a glance to tell the difference between the "regular" Internet and the Undernet.
** Elemental Armors. While it may serve as the precursor to the Style Change mechanic, it functions differently; you can buy them from Net merchants, it halves all damage that isn't the armor's elemental weakness.

** Most of the mystery data you find on the net draw randomly from their possible reward pool, regardless of color. You can even save-scum those rewards without needing to jack out and in again. Only a few instances are once-only rewards with fixed locations and yield. The second game onwards [[ColorCodedForYourConvenience standardizes the behavior of each color of mystery data]].

A Japan-exclusive port, ''Rockman.EXE Operate Shooting Star'', was later released on the UsefulNotes/NintendoDS in 2009. Along with some quality-of-life improvements, this version features a new crossover scenario with ''VideoGame/MegaManStarForce''.

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/mmbn1gba.jpg]]

** [=RockCube=] in this game creates three random cubes in the players area. Not only is this not how the chip works in later games, but it is impossible to place three cubes in the player's area outside of this game. [=RockCube=] from ''Battle Network 2'' onward takes its behavior from [=IceCube=], a chip exclusive to this game.

** Slot in Sword, [=WideSword=], and [=LongSword=] in that order and, instead of activating the signature [=LifeSword=] Program Advance, the player instead gains access to "[=BetaSword=]" (B-Sword). Beta and Sigma Program Advances, which lets the player activate one of their component chips (chosen at random) 6 and 9 times, only exist in this game.
** [=RockCube=] in this game creates three random cubes in the players area. Not only is this not have the chip works in previous games, but it is impossible to place three cubes in the player's area. [=RockCube=] from ''Battle Network 2'' onward takes it behavior from [=IceCube=], a chip exclusive to this game.

** Paralysis is handled differently; when hit by an Elec ball, the target will spasm and keep taking damage anytime they move. Later games would make it so that the status causes the target to be stunned for a few seconds without triggering MercyInvincibility.
** Opening up Internet areas is done in a very convoluted way. There are two key items that are required to unlock gated parts of the Internet areas; the "/" items are keys that simply open up Internet area entrances (normally given through story progression or defeating the owner in a boss fight), while the "@" items link the owner's respective [=PCs=] with the Internet areas, but they can only be activated by entering from a different PC and then unlock the portals from there.

** Paralysis status is handled differently; when hit by an Elec ball, the target will spasm and keep taking damage anytime they move. Later games would make it so that the target is stunned for a few seconds without triggering their MercyInvincibility.
** Opening up Internet areas is done in a very convoluted way. There are two key items that are required to unlock gated parts of the Internet areas; the "/" items were keys that simply open up Internet area entrances (normally given through story progression or defeating the owner in a boss fight), while the "@" items link the owner's respective [=PCs=] with the Internet areas, but they can only be activated by entering from a different PC and then unlock the portals from there.

* Paralysis status is handled differently; when hit by an Elec ball, the target will spasm and keep taking damage anytime they move. Later games would make it so that the target is stunned for a few seconds without triggering their MercyInvincibility.
* Opening up Internet areas is done in a very convoluted way. There are two key items that are required to unlock gated parts of the Internet areas; the "/" items were keys that simply open up Internet area entrances (normally given through story progression or defeating the owner in a boss fight), while the "@" items link the owner's respective PCs with the Internet areas, but they can only be activated by entering from a different PC and then unlock the portals from there.

** The existence of AfterCombatRecovery, where [=MegaMan=] will recover all of his HP after every battle. The only exception is the Power Plant dungeon where it is a gimmick.

* ChekhovMIA: At the start of the [=IceMan=] scenario, Yai notes that a student from another class has gone missing. Then she reveals she's learned this other student was kidnapped. [[spoiler:It's Dr. Froid's son kidnapped son, who is being used as leverage against him to work for the WWW]].

* AmbiguousSyntax: The Metroline worker who declares that a landslide has occured that's preventing the Metroline from running. As near as can be told, the only "landslide" that has occured is the pileup of [=StoneMan=]'s boulders blocking the internet pathways, but the Metroline worker makes it sound like one occured in the real world, too.

* {{Foreshadowing}}: As soon as you can use the Metro, you're prompted to pay Yuichiro Hikari a visit at work. He's not in, but while you're at the office you can find a photo of his family [[spoiler: revealing that Lan is not an only child]], and talk to some Navis in the large workstation who tell you about an experimental Navi with human genetic data.

* ContrivedCoincidence: One of the programs WWW needs for its EvilPlan just happens to be in Lan's house. Specifically his microwave.