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Retro Game Coders’ Part 11 update expands its Commodore 64 BASIC dungeon crawler from one map to five levels. Players must collect each level’s chalices to use the stairs, while a surviving character carries stats, hit points, gold, keys and magic forward and gains some upgrades.
Retro Game Coders’ Part 11 tutorial expands its Commodore 64 BASIC dungeon crawler from a single map into a five-level game, adding stairs, collectible requirements and character upgrades. The change gives players a reason to continue after clearing a map: collect every chalice on a level, reach its stairs and carry a surviving character’s progress into the next dungeon.
Each level uses the map generator introduced in Part 10, with added rules for placing objects. Players begin in a centre room, while the stairs are placed in one of the four corner rooms. The dungeon’s existing layout rules are intended to make all rooms reachable. The stairs are placed in the centre of an open room, and they cannot advance the player until the level’s chalices have been collected.
The number of chalices rises in steps rather than by one on every level: levels one and two require one chalice, levels three and four require two, and level five requires three. Each chalice is worth 10 gold. If the player reaches the stairs too soon, the game reports how many chalices remain; collecting them triggers a message directing the player to find the stairs.
The tutorial separates character setup from level construction. INITPLAYER runs once when a game begins, while BUILDLEVEL runs for each new map. That split allows a living character to keep hit points, stats, gold, keys and magic when descending. On level five, using the stairs ends the game with a win. The end screen also reports the level reached and gold acquired; a new game resets the character and map.
Progress Now Carries Between Maps
The update changes the project from a single-map challenge into a short progression loop. Players now have two linked goals on each floor: find every chalice, then locate the stairs. Keeping a character’s resources between maps makes the choice to descend consequential, because damage and accumulated rewards are not automatically erased when the next map is built.
For readers following the programming series, the design also shows how a BASIC game can distinguish between starting a new game and creating another level. Separating those routines provides a practical way to preserve player data while rebuilding the dungeon. The author describes the stat bonuses as an initial demonstration, rather than a settled balance system.
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From One Map to a Five-Level Run
In the previous installment, Part 10, the dungeon had one playable map and ended when the player found a chalice. Choosing to play again created a new character and map, clearing earlier progress. Part 11 retains the map-generation approach but changes the goal: the player must find all chalices on a floor before the stairs will work.
The series author says the project can be edited in a browser using the Online Retro IDE, without downloads or configuration. The tutorial remains focused on a small C64 BASIC game: five levels, a win condition at the final stairs and a summary showing the player’s level and gold.
““For now, the stairs on level 5 gets you out of the dungeon and wins you the game.””
— Retro Game Coders, Part 11
Level-Up Balance Remains Open
The article presents the stat increases as provisional. A character receives hit points equal to half their constitution, rounded down, plus one point in strength on even-numbered levels or dexterity on odd-numbered levels. The author says the bonuses may be reconsidered during a later polishing phase, so their final form is not established.
The source also notes that placing a chalice can fail after 200 unsuccessful attempts to find an empty floor cell. The program counts only chalices successfully placed, allowing the level to remain finishable in that case. The article does not report testing results for how often placement fails, nor does it provide a publication date or performance measurements.
Further Tuning and Tutorial Steps
Part 11 documents the five-level system and its initial rewards; the source does not give a date for another installment or describe a confirmed release schedule. The author points toward a later polishing phase for considering which character upgrades are useful. For now, the stated win condition remains reaching the stairs on level five after collecting its chalices.
Readers can follow the tutorial by editing the BASIC code in the browser-based Retro IDE, according to the article. Any later changes to the stat system, level design or additional content remain unconfirmed in the supplied material.
Key Questions
What changed in Part 11 of the C64 BASIC dungeon crawler?
The update adds five dungeon levels, stairs, chalice requirements and character upgrades. It also separates character initialization from map building so a surviving player can carry progress between levels.
How many chalices are needed on each level?
Levels one and two require one chalice; levels three and four require two; and level five requires three. Each collected chalice is worth 10 gold.
What happens when the player reaches the stairs?
If chalices remain, the game reports how many are left and blocks progress. Once they are all collected, the stairs take the player to a new level, or win the game on level five.
Which character details persist between levels?
A living character keeps hit points, stats, gold, keys and magic when the next level is built. Each level also grants a hit-point increase and raises either strength or dexterity.
Are the level-up bonuses final?
No. The author describes them as an example of how levelling can work and says the benefits may be reconsidered during a later polishing phase.
Source: retrogamecoders.com
