New Features
Added a fully animated Tetrogue logo by the talented D.R. Ink to the title screen, replacing the old static "TETROGUE" text: letters fall into place left-to-right (each landing pushes the colored bar beneath it), then the tetromino pieces sitting on the wordmark drop into place in random order, with the I-piece saved for last for a special bounce into the U's cup. Default piece colors were also retuned to match their corresponding enemy sprites' hues while keeping each piece's traditional color family recognizable.
Added a "Heroes — Coming Soon" preview to the Difficulty-select screen: a small animated, locked I-piece character (with blinking eyes, an idle sway, and a diagonal "Coming Soon" ribbon) teasing an upcoming Hero-selection feature. The whole Difficulty-select screen was reorganized into a 3-column layout to make room for it (Hero and Difficulty selectors on the left, their descriptions in the middle, the Custom Difficulty/Challenge Run/Starting Relics options on the right).
Quality of Life
Adjusting any Custom Difficulty slider now automatically turns Custom Difficulty on, instead of requiring a separate click on its "Enabled" checkbox first. Turning it back off now resets all 6 sliders to the selected difficulty tier's values (previously only reset 4 of them).
Balance
Battle/Elite slime counts now step up in the back half of each stage instead of staying flat all the way through: Stage 1 goes from 1/2 to 2/3, Stage 2 from 2/3 to 3/4, Stage 3 from 3/4 to 4/4. Endless Mode is unaffected.
Audio
Reworked the hard/sonic-drop impact sound and lowered its volume — the previous sound had an unintentional double-hit "domp-domp" quality, per player feedback.
Reworked the piece-rotate, menu-hover, and generic click sounds to reduce fatigue from hearing them so often during normal play.
Fixes
Fixed the ◀▶ difficulty-arrow icons rendering fully invisible (not just misaligned) on some Windows configurations when the Readable Font accessibility option is enabled.
Fixed the Custom Difficulty panel's "Enabled" checkbox overlapping its header text at larger font sizes.
Fixed the "Defeat [boss] to unlock [difficulty]" hint always naming the Minotaur (the Stage-1 boss) regardless of which tier it referred to — it now always correctly names the Lich (the actual Stage-3 boss that unlocks the next tier) and only shows for the tier it applies to.
Fixed all 4 challenge events (Precision, Speed Trial, Blindspot, Perfect Clear) never auto-pausing on alt-tab/window-focus-loss, gamepad disconnect, or the Steam overlay opening, unlike real battles.
Fixed the horizontal NEXT-queue box (when enabled) overlapping each challenge event's own title/goal text, and repositioned it to sit beside the board like it does in a real battle instead of anchored to the far right edge.
Fixed quitting the game mid-way through any challenge event silently skipping that event entirely on the next Continue.
Fixed the post-run shareable card's Stage 1/2 boss portraits (Minotaur, Demon Slime) rendering noticeably smaller than the Stage 3 boss in the enemies-defeated strip, and fixed a high kill/relic-count run's card overflowing into the Victory/Game Over screen's own buttons.
Fixed a bug where two enemies dying in the same instant (e.g. an overkill hit) could silently drop one of their kills from both the run stats and the post-run card.
Fixed the Demon Slime boss's legs rendering chopped off in the post-run card's enemies-defeated strip.